Grow More Potent Cannabis by Doing THIS with Your Grow Lights

[@alexblades1889]

Lowering my temps for the last 2-3 weeks of flower gives you nice dense buds as well as some beautiful colours. Never fails, currently ready to harvest some permanent marker with nice solid nugs an lovely purple colours. Done under 1000w maxbright daylight pro leds

[@vagrantvidz]

How much would you lower the temps?

[@sencer1411]

I have tried a bunch of differant tricks and the one that i notice a huge difference in potency and quality is UV bulb the last 2 weeks.

[@evzevz06]

Wayy too late. Uv should be in veg and knocked off once you hit 12/12 The perceived increase in quality from using it the last 2 weeks is either your over all grow skills are increasing, or placebo effect

[@ls3silveradoallmotor707]

I've been growing for 30 plus years have tried darkness for 24 hours haven't noticed any difference at all

[@johnkehoe8368]

i been growing along time also and alot of what these people are saying is wrong marijuana has to have darkness even in flower

[@diezelvh4133]

Try a uv light in the grow. Your welcome.

[@erdbeerzwiebel3404]

​@@johnkehoe8368 Nobody said that you don't give the plant any darkness at all... It's about the last 24-48 hours and NOT the whole flower period... Otherwise they wouldn't even go into flower ...

[@bradylandofwonderproductio3291]

Same

[@JoshStout-wf3ry]

Ya I'm with ya 24 years growing dont buy the darkness I do turn the lights down keep a good eye on tricomes I call mid plant my favorite tasting part of the plant ...

[@4green2mat0es]

This is something that I just went through , heard about the myth of 48 hours of darkness and also heard 48 hours of light before harvest ! I don't know if either one works or not , I just kept checking trichomes and harvested yesterday! Now the slow as possible drying then off to curing long as possible! Great info and love hearing your knowledge 👍 ☮️☮️

[@ScottyReal420]

Thank You.

[@Moe1979100]

Two days before harvest I left my lights on 75% power on a 800 W light for 48 hours. It seemed like it did a little bit better. This was for photo plants.

[@ScottyReal420]

Nice, thanks for sharing!

[@knowyuhgrow420]

Interesting you say that because I realize that my bud get way harder the first week of reveg

[@Crawdaddy1420]

My timer broke a few harvest ago in week 5! They continued to bud for another week before I realized they were starting to revege! I immediately cut lights & tried to put the most immature back under 12/12. They wont go back into flowering in time. I went ahead and chopped & cured & was surprised at the quality.

[@joshs4483]

A normal dark period (12hrs or 18-20 for autos) is all that's really needed, longer periods don't make for any noticeable difference. The plant takes the sugars down to the roots to feed microbes as exudates, or it will store starches in the leaves for a food source throughout the night while it cannot perform photosynthesis. Using up these sugars makes sense and I could see a benefit. Although I've always done this so I don't have a reference to bud that was harvested during daytime, so take my word with some salt. Research has shown that most plants completely use up these stores of sugars by dawn, so going for a longer night than normal should have no effect. Although if you cannot harvest right as the lights come on I would advise you to just leave the lights off till you're able to harvest later in the day. As for the plants producing extra trichomes or putting on more resin I would chalk that up to bro science without any mechanism to drive their hypothesis. Trichomes take weeks to ripen; resin is a defense mechanism for light, water, nutrient, and insect stresses.

[@Yophillips3272]

I've seen some sativa dominant that just never seem to finish skinny buds and just keep growing taller and taller the 14hrs of darkness kind of makes sense in that situation. Does it actually work I have no clue.

[@joshs4483]

@@Yophillips3272 I just harvested a landrace sativa at 4months in flower and 14hrs didn't help to shorten the flip or flower. Keep in mind that's my only experiance with super strong sativa leaning plants.

[@lunareclipse1482]

sounds like excessive Nitrogen feeding.@@Yophillips3272

[@garywillow6578]

Build a soil says the same as you.

[@BarryBirr]

Only problem is that if ur lights are 10,20 feet above ur plants, ur wasting time and energy, with our product it maintains the perfect height above ur canopy and produces more quality and quantity..

[@derek2593]

I did a grow with 20 hours on and 4 off for veg, and then 13 hours on and 11 off for flower. Some of the densest buds I have ever grown.

[@cd123atd4e]

I don't know bout that more time on than off during bloom broskey.. I've done 14 off 10 on for bloom but I haven't ever done anything like that with more light in a time where the plants need more darkness to create buds.. first off Genetics , then calcium being correct and having enough par in correct environment is what develops dense buds

[@cd123atd4e]

Even my chems and sours dry dense tho dense isn't everything

[@derek2593]

@@cd123atd4e , I'll keep that in mind. Thanks, man!!! After all, the final test is consumption.... Regardless of looks.

[@herbertwerner2287]

Ill keep it mind I wont rule out changing anything to the light schedule.

[@yknowiknow5937]

​@@cd123atd4e Temperature and humidity are a big factor, as well. Low temps and low humidity, in the middle to end of the flower stage. I agree with the 10 on, 14 off light cycle, but ya gotta use INTENSE light, when using shorter days. Wow, he, just said that concept. 🤔

[@roberto8383jt]

I like to switch to 6 on, 18 off for the last 2-3 days. The plants still get some light to photosynthesize, and more darkness to ripen. Don't have any data on it but seems to work for me. I never understood 24 off as there is no photosynthesis as you stated.

[@ugotdestroyed4227]

They are not ripening at night. Ur missing out on terpenes and trichome production. Essentially ur just delaying ur harvest by a few Days and making worse product. 12/12 and when uve reached an amount of ambers ur fine with chop it down.

[@supermuffin38]

Scotty, absolutely love the channel! I tried the 24hrs of darkness 3 grows back and i can say, i really didn't see any significant difference. I went back to just normal harvesting. But in all fairness, i am a newbie. Only been growing a little moe than 2 years. In that time, i was really just experimenting to find the best way to grow for me. I went totally organic, switched from fabrics to a SIP container and never looked back! Thanks for putting out great content!

[@ScottyReal420]

Hell Yeah Thanks for watching, and commenting!

[@Bloomcycle]

I give my flowering girl's deep red the last hour of 12-12 to mimic dusk . It's been working great 👍

[@sc4rez]

Thank You so much as a complete noob who is really hyped to start his second grow this channel is a goldmine of information Big love and respect to both of you Your buddy who is interviewing you and to yourself this is great ❤

[@joeleckley1924]

I've listen to a few of your videos before, but damn this was the most informative info on proper lighting and why the plant reacts and the science behind it that I've come across in awhile! Great video to recommend to new growers

[@ScottyReal420]

Thank you, our goal is to help those just starting out!

[@Mr.GreenFingers_420]

I love the way you breaks things down, Scotty! Makes it super easy to understand and put into action.

[@ScottyReal420]

I appreciate that!

[@Mr.GreenFingers_420]

@@ScottyReal420 I appreciate your content! I'm gonna make Ohio proud. 😊

[@Zackattack24]

Mr Cunuk has mentioned that he does this. I have done 48 darkness and seems to really work for me. Keep humidity low 35-40% and temp between 60-65F degrees. Stresses the plant out before chop causing the plant to produce more trichomes, Terpenes, Higher THC. As he said with DLI. Leaving the plants in light for longer than 12hrs in flower causes a light stress on the plant if running at high PPFD. To me I don’t want to risk burning.foxtails,more electricity more cooling.

[@evzevz06]

48 hours of light stresses the plant and doesn't put it in at state of limbo with no light energy. 48 hours is 4 days worth of 12/12 light energy given to the plant over a 2 day span, keeps it metabolising and all the energy to ripen, is that not a better use of the plants time than sitting in the dark and cold hoping rot doesn't set in, considering when you chop the plant doesn't just die its still basically alive and in darkness for the first few days

[@cybershoppe420]

I love your logic and professionalism when it comes to the knowledge of our favorite plant.. Thank you Scotty, you are definitely the man.. Your appreciated. The question I had ever now is how much DLI should a plant absorb within an 18 hrs of light.

[@odinx1856]

You can see it on the plant when it has reached DLI. Given that conditions are right for the plant(distance to light source, temperature, humidity, airflow, watering and soil/rootsystem) you`ll see the leafs standing tall towards the light, and the short answer is that when the plant has reached enough light for a day it will not point the leafs towards the light source anymore, but let em drop down or even twist them another way, as avoiding the light. This can also be true if the plant is stressed with too much light, too hot/cold, too windy, humidity way off, so it might take some time dial it in.

[@Fatfreddy7]

Heya scotty, i tried lights off 24hrs before cutting alongside drying media 5 days after flush and liked the results

[@jessiewhite7783]

Scotty’s take on the 24/48 hr dark period makes a lot of sense… perfect mold breeding ground

[@OGmeow22]

facts🤣

[@mikehunt4797]

Only way it's an issue is if you have no humidity control(Dehumidifier) and if you cant control that enjoy powdery mildew.

[@jessiewhite7783]

@@mikehunt4797 To each their own lol

[@mikehunt4797]

@jessiewhite7783 no its facts not my opinion.

[@LowetheTechGuy]

​@@mikehunt4797 Facts according to whom?

[@terpsmith822]

24hr of Darkness at the end only saves electricity. People also always talk about making more tricome prodution at the end but those trics are not mature and hold no value..

[@doubleooh7337]

24hrs of light atvthe end only costs electric

[@Superfasteddie]

Right on the money Terpsmith822

[@ScottyReal420]

I agree!

[@force9446]

@@doubleooh7337thats… thats what they said…

[@Jax-on7hh]

At the end of the cycle don't do 24h or 48h darkness you need to do 24h or 48h light but the room must be cooler then normal this helps with more terp production just before harvest!!! Straight outa Dr Bruce Bugbee's mouth

[@kabar48]

Yes. I do 4 days of darkness. This does 2 things. 1 it does not take water those days so when you harvest less water weight, 2 after 24 hours of straight krebbs, the plant goes into a produce more resin state, so for 72 hours you allow it to do so. This increases flavanoids. I do it on my hydroponics table and people says things that If I repeat makes me sound conceded. It's great Lil end of grow cycle trick I learned in the 90s

[@bradylandofwonderproductio3291]

Better trick , grow hydro, knock week off and improve quality and yeild. Do all basic stuff to make weed better, before trying unproven techniques

[@MrPrplhaze1]

Long time grower here. I've put plants in total darkness for the last 3-4 days many times. The plants basically just sleep that whole time. They don't drink much at all. You should be able to keep humidity below 55% before thinking of doing this also, as he mentions, because your humidity will go up, due to not having your lights on. I noticed a smaller electricity bill ;), but I dont think it helps the plant at all to keep them in darkness at the end. What I do think can rly help is lowering the temps(60-70F), as Alex mentioned. I too was amazed at the colors that came out, and the dense solid purple nugs. In nature the temps would get lower, so I think the plant does more to protect itself from that cold.

[@AktiVader]

48hrs darkness on the flip to flower, build up those bloom hormones. 18/6 for the last 7-14 days. Some cultivars WILL start monster cropping but it’s a solid strategy. Have used this on many cultivars including my current run. Cheers

[@Korrekteur]

what cycle until those last days? 12/12?

[@paulie6446]

In the last week the plant isn't making more trichomes, it's maturing the ones it has.Lower light levels for the last 10 days (12/12) will fatten up and ripen those nugs.24/48 hrs of darkness just makes your nugs damp.

[@Superfasteddie]

Bro. 👍

[@pugglesprindle2698]

How does Scotty only have 12k subscribers. He is a beast.

[@LeroyVW087]

I’ve seen in an interview that, a plant starts to die without photosynthesis. If that’s the case the trichomes will actually start dying off as well. I can’t see a plant pushing out trichomes as a last ditch effort to protect itself, especially that trichomes are more for blocking the strong sun and protection from some insects.

[@AaricHale]

Lots of really great information ! You can have all the best nutrients in the world and if you don't have the right amount of light stuff still won't grow well . I can plant cool weather crops in October and you can go weeks and not see very much growth until the days get longer . Thanks for sharing and have a great day !

[@JW-lq9ow]

The PHDs I've listened to said, no light = no energy =less resin production. So that makes major sense.

[@gypthcnuryse7611]

I'm a week from harvest so I'm trying this extended light time

[@ScottyReal420]

Hell yeah! let me know how it goes.

[@gregsmith2262]

I am going to give the 18/6 for the last week it makes sense.

[@littlebiscuit53]

I've tried leaving the light off for 72 hours a couple times. When i ran with HPS it seemed to help a bit but they ran so hot I'm sure terps boiled off every day. When i switched to LED i don't see a difference so i stopped. I like the sound of switching back to 18/6 for the last bit of flower but even if the yield goes up I bet it's mostly leafy biomass and the quality decreases.

[@ScottyReal420]

Check out Rasta Jeff from Irie Genetics, he talks about it on his podcast, but don't forget to come back and watch our next video 😂

[@Dangerously2014]

I tried 36 hours of light before harvest on my first grow. It was an Automatic Critical Orange Punch and the smell while harvesting as i was cutting off the fan leaves was incredible almost overwhelming.. i will always do it like this from now on. Maybe even 48 hours of light

[@nk-dw2hm]

Glad you touched on DLI, a lot of people dont understand that it and VPD are the majority of environmental factors you need to worry about

[@ScottyReal420]

we are here to help people learn!

[@Leonnoelmusic]

Whenever I was looking online about the 24-hour 48 hours of darkness thing they did some studies on groups of 100 clones they had three separate groups. The 24 and 48 hours of darkness showed a higher percentage of the more complex terpenes that don't normally show up and evaporate at low temperature. Once it hits 36 hours of darkness it started to drop off on all the terpenes. So it's common for people to do 24- 48 hours of darkness only if you're trying to get some of those extremely volatile terpenes that evaporate off easily to stick around in your harvest. You're talking about quarter of a percent half a percent difference.

[@N0C0MPLY]

Interesting study. Where can I find this online, please?

[@420edu3]

Bruce bugbee said that was nonsense I believe,and actually 48 of light had more tricomb production if I heard correct 😊

[@bcontent01]

Been running 48 hours of light prior to chop, gonna try to run 24 hours of light for the last week now!

[@danielmonteiro8074]

24 of light might trigger herming if left too long hey.

[@bcontent01]

@@danielmonteiro8074 herming is a genetic issue. And I've never had an issue yet. Go check out Dr. Bruce Bugbee and see what he says about herming and also 24 hours of light. Tons of information against what you just said brother. Educate yourself a bit.

[@ScottyReal420]

Try it out!

[@knowyuhgrow420]

@@danielmonteiro8074how do you flip fro flower to veg fast?

[@bcontent01]

@@indoor420 Sweet, I was thinking about running it that way for the last 2 week prior to chop.

[@comfortablynumb9342]

The length of the day is very different in the north or south than they are near the equator. During the summer the days are very long in the north or south, and very short in the winter. Around the equator they get 12 hours all year. So I don't understand how cannabis plants decide to flower when they live their whole lives with 12 hours. It seems like they'd just start flowering very small but huge plants can be grown in those areas. It's very strange to me.

[@jonathanvannoy8645]

Great way to open with some great information!

[@vincentellsworth7905]

the theory with darkness before harvest is that the plant thinks its about to die because of no light essentially its a high stress technique

[@markdeloe137]

Good work bro ..I enjoy a little content......

[@brentthedetailman2228]

I run 48 hours of darkness except I only run my uv lights and i don't know if it does anything out of what I can visually see but I had a big bud plant 13 weeks in flower and solid white has sticky straight up still but i said forget it I'm gonna harvest and cut the lights off. 2 days later all the white hairs were brown and I had a couple amber.

[@patrey6797]

When popping seeds, I leave the light on 24 hours for 3-4 days. That makes them spindly and need support for a week. After they are 2-3 inches switch to 18/6. That makes a nice mature plant with 3-4 inches above the pot without having to hack on the plant later to get it clear above the pot.

[@Gillyboy-sz4ys]

i have my intensity too 950- the highest tops are 1007 ppfd i’m not running co2 is that too high should i be worried about burning. i’m in flower around day 38. try to find the perfect zone with causing stress.

[@drakkondarkblood6638]

I've tried the 24/48hrs darkness at end and found 0 difference. I also tend to just keep mine on 18/6 for veg as running 24hrs can cause stress and I had 1 strain herm on me and the 24hrs in veg was the only change, plus 18 uses less power.. I've also had strains that just wouldn't bulk up and finish on 12/12, so switched them to either 13/11 or 14/10 and they bulked up and finished. One was meant to be an 8 - 9 week strain, it started great look fantastic, but after 8 weeks they only looked like they were week 5, so switched lighting to 14/10 and at end of 2 weeks they looked great, buds basically doubled in size.

[@evzevz06]

Have you seen the study which compared flowering times with mass and potency? In short, 12/12 all the way produces the most consistent and high potency 14on/10off for the first half of flower, then 12/12 to the end, produces the highest yields Of those tests conducted. So they aren't sure yet but 15/9 might even produce higher yields in photoperiod plants than starting at 14/10 The study was called moving away from 12: 12

[@drakkondarkblood6638]

@@evzevz06 Nah haven't, will have to look it up, But I didn't run 14 on, my 14/10 was 14 off 10 on. I have heard that if you're running co2 you can run more/longer light, and most studies that I've read all run co2, but I don't run co2 hehe..

[@evzevz06]

@@drakkondarkblood6638 In their N.L. test, the one which started flower in 14on/10off, yielded nearly double what the one started on 10on/14off did. Had to edit my first comment to add they started in 14/10, then switched to 12/12 halfway through flower. Running 14on/10off to the end resulted in worse results

[@Mr.Beefyuser-tl4zx6no7k]

I’ve taken my plants and twisted the stalks from the top down and left them on the plant with roots intact for a day in darkness and they were 3x as good as the ones I didn’t do that to

[@toddburgess6792]

I've been in the 24 hour dark until I found Scotty Real. New subscriber, because Scotty translates science garbldygook into comprehensible words. 😀

[@mikecurry6847]

One thing that I will say about your counterpoint to the claim about total darkness for a few days being unintuitive is that the mere fact that it's unintuitive isn't an argument. Incredulity is not enough on its own because the natural world has no obligation to make sense to us. I'm reminded of the research that shows that a drought near harvest can increase cannabinoid content of the finished product. Stress has unexpected results on plants. When you consider the fact that things like cannabinoids, alkaloids, indoles, etc., are often, if not usually, a part of a plant, fungi, or animal's immune system or some kind of defense from something in its environment, it isn't really that unintuitive to think about how strategic stress can be useful for us since we have end goals that don't line up with biology. We all know and understand the link between mild stress and positive effects through understanding the link between dry back in the root zone and root development. I do think that you have a valid argument in saying that there is no empirical evidence and I agree with your characterization when you refer to it as "bro science" though. As for the thing about mold starting when you have the lights off, I think that a lot of pros will tell you that they elect to use a fungicide the day before or the day of harvest, maybe even after its hanging. There are many things you can use like this that are safe for late application and very effective. Two of my favorites are a broad spectrum fungicide called Zerotol and a bacteria called Streptomyces lydicus, both organic of course. Zerotol is glorified peroxide. It has paracetic acid in it though and that adds to its antimicrobial nature while also stabilizing the peroxide to extend its time of effect. When used in conjunction with RO just before harvest, it has exactly zero effect, measurable or not, on the end product because both RO and Zerotol evaporate without leaving a residue. Streptomyces lydicus is also really great because it's a bacteria that feeds on the mycelium and spores of parasitic fungi, such as borytris and powdery mildew. When it's on your plant it's basically pestilence for petty much all the fungi you hate. Both of these products can be applied up to the day of harvest. In fact there are a lot of places where people will spray salad at restaurants with Zerotol before eating it because some countries don't have very good controls on food handling and ecoli outbreaks are common. There are so many gentle options these days that mold should never be a deciding factor in something like this. I really don't care how high the the disease pressure is or what vectors I have (outside of my nursery) because my IPM will address any and all contaminants that will come my way, be it mold, bacteria, or insects, and I'll do that without hurting myself, the bees, animals, etc. I've only recently found this channel but I would really love to see somebody really do a deep dive on bio pesticides like entomopathogenic fungi and insecticidal bacteria, all natural systemic deterrents like rosemary oil/sns 209, and bio controls such as chitin in the root zone. The ag industry has done the work for us, we just have to seize the data. This is the way the whole world is moving right now. Bacteria, fungi, and bio controls are safer in every way and also tend to be more effective as well. It's a revolution that is going to improve human health across the globe and growers, big and small, should be taking advantage of this

[@derek2593]

Awesome, thanks. Now, I can finish plants the same week I start new ones on a 24 hour light cycle (more like a lack of a cycle).

[@ScottyReal420]

Good luck!

[@_Srt-616]

So just a quick thought on the whole sleep thing. I've had plants droop coming towards light off cycle. What is that all about?

[@ScottyReal420]

When the plants start to droop that means they have reached their day lighting integral, and the plants are going to sleep.

[@PhantomFilmmaker-jd9ho]

Is it the same for the morning wood when the leaves are straight up?

[@Lydia11111]

Thats normal the plants resting. Just like when the lights first come on the leaves are stretching up to the light.

[@walterrupp4229]

Before I put them into a bud stage, I have tried the 24 hour darkness just to create stress before putting them into the bud stage to create more energy

[@MarkMarvin1983]

I do 24 hours of clone and veg till they’re about 12” tall then switch it to 18 hours for budding. I use Deep Water Culture (DWC) and I have a 250w hps light for the whole process. They do tend to get a little too tall; but for a small home grow of 4-6 plants I get enough to regrow them from clones or off the original stem….for myself. I find that they can get quite stressed out but they can grow back after you chop off most of the plant. Plus since they are growing in DWC they already have a huge root system. Mine net together with themselves. It’s really cool. Truffle Cake!!🎉🎉🎉

[@ScottyReal420]

I used to grow DWC back in the day, I remember those roots.

[@drj3033]

My plant sleep during the 24 hour lights on . They droop down for a few hours

[@dherdy9205]

Full led 20w bar with the 3 phase switch for lighting options 6k 4k 3k for 24hours , got mine this year from my super garden store , cheap and I haven't used any else for seed clone veg , the spectrum is good As cannabis is a c3 state plant So it doesn't require a darkness period, Though a straight flip might Hermes your crop so drop it down 4 hours for the first week before flipping into 12_12 Now cable tie your led 20w 3 switch light to your tent poles and switch in to full flower , The new LEDs are awesome, they offer the ol HPS warm orange yellow light glow Not purple or red , The company is called arlec in Australia Subbed in dudes

[@RichardGoodew]

Incorporate sunlight to compensate for paid lights. Have grows near window sun light side. Mirrors can help reflect light into a room (pending security). Also catch rain water to process to save on water costs. Boil in campfire if need be to sterilize.

[@williamsullivan7200]

One useful trick I've used for many years is doing 24 hours of light for about the first three weeks or longer. This will increase the female to male ratio when using regular seeds. Obviously this is not necessary if using feminised seeds.

[@jimholowach457]

Great info bud. I’ve been using Grobuckets for my autoflowers and they work great. How would you use growdots with these Grobuckets??? Also what should the dhl been when in flower. Thanks for all your tips it’s made me a better grower🤪🍻

[@chriszamora574]

I’ve noticed that how intense the light that my plant out doors but its getting only12 hours of light but just now started too flower because the spectrum of light is changing it aug 21 going into flowere a little early.

[@davidbowman3509]

Just found this channel. Seems pretty interesting. Keep it up, and I'll keep coming back!

[@ScottyReal420]

Thank you, we'll keep making videos if you keep on watching them!

[@Captinfun101]

One guy at a grow shop once told me about ( I never tried it ) doing 8 on 8 off 8 on 8 off continually during flower because the plant only needs 8 hrs to do what it has to . And you gain a extra cycle in a 24 hr period which ups to around 50 odd extra cycles in a week thus shortening grows by a several weeks every crop . Anyone herd this ?

[@dyonisis7681]

as for ripening... when you buy bananas from grocery, I hope you buy properly. Meaning green bananas. not yellow/ripe. keep them in a dark cool place. they'll ripen up as you need them. Nothing worse than buying a batch of yellow bananas and theyre garbage in two days. Not to mention the aphids/fruit flies/gnats youre bringing in to your household jeopardizing your crop. My wife does the same with hot chile peppers. any green peppers are kept in a dark place. They ripen up quick turning yellow and red. So that principle could be applied to your mother plants. Test it. Increase the night period. try 8 on 16 off. What people forget is the night time, is the healing time. Keeping a plant in 24 hour light is no different than weightlifting 24 hours and day and then wondering why your muscles are shrinking rather than growing. bodybuilding is creating little micro tears in the muscle groups. They need food and rest to heal at their new size. So why is it hard to understand that plants share the same principle? Every morning I measure my plant and notice the biggest growth happens overnight.

[@deltabluesdavidraye]

Cannabis is not a banana plant to start.

[@nowaistedspace4946]

You can only have so much light intensity during lights on without having to add CO2. Nice info Scotty!

[@ScottyReal420]

Very true!

[@knowyuhgrow420]

Well yes and no it’s just the return for inputs

[@nowaistedspace4946]

@@knowyuhgrow420 My understanding, a plant can only take in so much input, before it is no value to the plant unless CO2 is added from that point on.

[@MrMockingbird1313]

Hey Scotty, love your videos. Marijuana species are only two species in the Cannabis family. Some other species in the family, like brewer's hops, have been shown to grow roots at night. When does marijuana grow roots in the light/dark cycle?

[@zack2656]

I grow in a greenhouse. Only problem I have is the heat getting pretty high. But I grow all organic. I use rabbit poop and whole carp and cow manure and organic soil you can buy at Walmart. This process has worked for me for a couple years now

[@AdamByrd-k3s]

Never tried the dark period before harvest...But someone I know that subscribes to that ideology said that it was because they were growing a variety that is known for being the color purple (gdp or something similar) and putting it in a COOL dark place causes the plant to turn more purple. No idea what other effects result as a side effect, or what happens if you do it to a plant that is typically all green, but that is what he said.

[@MikeParentLeap]

I’m playing with 13 hrs of light for flowering. Thats shorter than what most plants flower with outdoors. 12/12 doesn’t start til latest September in nature. My outdoors plants were well into flower by then

[@Hipsters_N_Hippies]

There is a daylight chart online. You can check the emerald triangle, The Caribbean, and all around the equator. However to skip to the point. I’ve noticed that most areas do start flowering right around 13.5 hours of darkness. I personally have been running around 13hours and 15 minutes of light and 10 hours and 45 minutes of dark once in flower. However it is most likely beneficial to also consider where in the earth your particular variety (or it’s parents genetics) came from. Because the beach of a island on the equator gets different amounts of light when compared to some varieties that grow on the side of some mountain ranges.

[@MikeParentLeap]

@@Hipsters_N_Hippies my two parents are hybrids. They’re short, dense plants and don’t stretch much. Both start flowering quickly after the switch. How does the 13:15 work out?

[@Hipsters_N_Hippies]

@@MikeParentLeap if you just asking if just over 13hrs works for me. It does. It’s been working just like a regular 12/12 room for me. They flip immediately once put in their from the 18/6 room. (Booth rooms turn off lights at the same time, it probably doesn’t matter at all but I’ll mention it) Can I say it’s 100% right for you? I can’t say that with certainty. However I can and do suspect that 13hrs will work just fine. However it is possible that 13:15 could work for you. if you are willing to experiment, I would recommend starting when you flip your plants to flower since we are taking about approaching the limits. And I wouldn’t want someone accidentally re-vegging. If you don’t see stretching After 10 days, than they most likely did not flip to flowering. And will have to lower the amount of time. (But I think you already knew that.) ✌🏻🤙🏻

[@Hipsters_N_Hippies]

@@MikeParentLeap update: I’ve been running 13-1/2 On and 10-1/2 hours Off for about 7weeks now. And so far no trouble from my Durban Poison or Cement Shoes. So I’m going to continue that 13.5/10.5 schedule unless I see any issues arise. But so far so good.

[@Hipsters_N_Hippies]

@@MikeParentLeap Apparently Mark, from Perfect Gardens (and Drops of balance) has apparently already covered the topic pretty well in a video called “how sensitive are cannabis plants to light actually” And he states that they start flipping into to flower when they drop right below 15 hours and 30 minutes of daylight. And be completely honest it sounds pretty accurate. apparently the goal here is to keep it anywhere under 15-1/2 hours of light. So that does leave us some headroom, As long as we keep the light intensity in check for the top colas. Because they are going to be getting a much much higher D.L.I. With the higher P.P.F.D. However with that, it should definitely produce more trichrome production... as long as you don’t fry them.

[@edwardmarkel3334]

I live in Hawaii and the outdoor light is only 13 hours at summer's peak. Any plant that's outside starts to flower immediately. Tahiti has a 12/12 light cycle all year long. I grow indoors so I can control my environment. Electricity is costly here and I have to run A/C and a dehumidifier 24/7

[@obssroberts1411]

hi scotty i justbought two tents black box ones 2x2 and 4x4 6.5ft tallnow my plan with said 2x2 and turn it on said side and you it for starter unit/ now as for the 4x4 .. i have 100 watt and not sure brand or lps would be the second light ger-love sp1000 grow light is that enough for the 4x4.. plans of just 3 auto flower in said 4x4 btw

[@aarontodessa]

The idea behind the 24 to 48 hours of darkness before harvest, as I was taught what's to accomplish two things, one -it helps to plant bulk up a little bit as well as get deeper colors. It said to kick out a little more resin or help the resin mature but mainly, w-when the plant gets light hitting it it starts pulling up water when the lights are off it's not pulling up water as soon as the light hits the leaf it starts almost a pump inside of it pulling up water. So 24 to 48 hours darkness helps you get a little jump on drying it cuts a little time off of it but it doesn't make them dry any faster it's still a slow dry like normal but you're not going to day or so off

[@bradylandofwonderproductio3291]

Sounds like your just being lazy. Cut weed down, and flip room, your loosing lots of days in a year, imagine 5

[@nateday9328]

I like your idea of supercharged dli for shorter time...makes sense to me...

[@aaronferrier6195]

scotty said before he leaves the lights on 24hr for 2 days right at the end. I have no idea which to do any advice?

[@sugargraham6868]

I'm gonna do it your way my man! Always sending love to you Scotty from here in Bama! Roll Tide an roll it up lol. Love your videos my man. Can't thank you enough brother. ❤❤❤

[@BPF80MCar-vi1pg]

Hopefuly we will be able to grow legally someday in Bama

[@sugargraham6868]

@@BPF80MCar-vi1pg ikr lol

[@bgithens1]

I’m still using a 600w platinum LED that was the thing 5 or so years ago, any thoughts on still using that old blurpies style?

[@codyramos3200]

Good question..

[@maartendenhartog1580]

I have seen videos from master Gardners that say 24 to 72 will start to break down on the plant but obviously when cut it does not.

[@lostpony4885]

Yeah that DLI is crucial.

[@solekickergaming5081]

i believe that i heard that putting the plant into darkness for 48 hrs at the end of the entire grow cycle has more to do with the drying process starting and after two days when you cut the plant down the chlorophyll is already starting to break down , i dont believe it has anything to do with trichome production.

[@lostpony4885]

Excellent imperial information

[@OkieTradez]

id like a clip on dropping room and water temps last month to where its coldest last week etc. so that it is more terpy and frosty?

[@leeadickes7235]

8/4/8/4 works for veg. Standard 12/12 for flower. Over the last 2 weeks of flower you can drop an hour of light to 11/13. Harvest when the lights come on.

[@Scottish.Linda.]

Hi how much coco do I need to grow 5 plants.

[@obssroberts1411]

only time i ever did 24/7 in veg is when i was doing 8x8 room 8 inch pots and 35 of them . 1 strait up bud.. work well on that set up but try it a few time with using normal size pots doesnt see a reslat worth bothering with 24/7

[@HeatherCoulon-rf4bw]

I lower my lighting a bit and lightly cut back on the amount of water I give them I use both techniques up until day about 21 or so of flower

[@jimg5619]

Is it worth introducing IR to the lighting? I've heard 30 minutes a day, 15 minutes before lights on and 15 minutes after lights out. ( ref. Mars hydro). Have you ever tried this?

[@hsyndicate7585]

Even if you do not have a meter you can tell when they plants have been saturated with light because they will start to droop down at the end of the cycle. So at this point you are just waste energy, so you can adjust the output of your lights or reduce the time on.

[@ScottyReal420]

we are growing light meters, the plant can tell you a lot if you pay attention and know what to look for.

[@rockmuza3225]

Can a light cause a circuit to trip & shut off an appliance? Just got an Evo 6, & i feel it's causing the fridge to poop. Granted yes, I'm also running a space heater as well. I don't like the idea, but I'm going to run the room without the heater to see if it's the cause. The Evo hasn't been higher than 3 on the dial as well. I may switch back to the old (lower wattage) light to see if there's any difference on the power system. As i didn't have this issue, while running the light & heater simultaneously. Now that i think of it, the dry tent had a de-hu & fan running with all these. Possibly needing a rewire of the home? Or even a new circuit breaker install? Thanks for any help/input.

[@patrey6797]

Be careful you don't want to burn the house down. A 15 amp breaker/line is only rated for (120*15=1800) 1800 watts. Add everything on that circuit and make sure not to exceed 80% (1800*80%=1440) continuous draw, that will give you room for the surge when stuff turns on. A meter called "Kill-a-Watt" is nice to help find the draw from items

[@rockmuza3225]

@@patrey6797 it was a blown fuse in the appliance. Replaced that everything has been copacetic since.

[@Acid2kone]

A tip from me so that the plants bloom faster and more effectively. Vegetative phase 12 hours of light with 1 hour light interruption in the night phase Example 6 a.m. - 6 p.m. Lights on An interruption from 1 a.m. - 2 a.m

[@stevecrabtree7654]

Stress causes terpene production.When insects and weather attack plants create terms to help defend off bugs and diseases.A vigorous plant will produce terpenes when going through a stressful situation.I run a kitchen knife through the bottom of the stalk by the medium then I place. Paint stirrers to make a gaping hole.I get double terpene production.Lst and extreme weather increases as well the darkness just slows chlorophyll production which can lead to a hay smell.Thats what I do Scott try it you will be amazed and always put holes in your stalk after you see the results.

[@stevecrabtree7654]

Terps not terms.😂I'm not a fan of autocorrect nowadays!

[@PhantomFilmmaker-jd9ho]

When do you put the knife in? Veg or flower, if so, what week?

[@Cultiv8tor]

I was taught:The cannabis plant being “an annual” in an outdoor environment gets its cues from natures clock and the rising and setting of the sun as well temp. At the end of the season the plant to protect itself produces trichomes as a shield to extend its life (and likely produce seeds from the shock of the impending cold weather to allow reproduction; a dead flower produces nothing) and this happens with shorter days and lower temps (fall). This trigger color/fade etc. I won’t debate if more trichome production occurs in the days/night. But the natural progression say the fullest a flower will be is just before it starts to die. It’s awful hard to go against nature, and not make mistakes.

[@stiphbreis5513]

I experimented and found that plants react better to a 17/7 rather than 18/6 and that's what I've used for the last 2 years. They seem to appreciate the extra hour of rest without any loss of growth

[@glen.simpson]

do some tests if you can...... even an hour is less watts over the month.... every bit counts

[@Idontknowwhatnametopick]

I like this guys advice.

[@johnmurphy-gi8lm]

In old days we had given dark times were 12-30’12/45! Especially the sativa long cycle benefits 13 hour dark period But the new auto flower seed is different animal

[@michaelduty1795]

I took two exact same Phenos grown in exact same soil side-by-side but I took one and put it in a dark closet for 48 hours and cut the other one down and they both came out exactly the same

[@hydriodic]

Try switching one back to 18-6 for the last 7-10 days and see if that makes a difference. I've been doing it and I think it does but don't have the ability to do a side by side.

[@robert40a]

Having a fan going for no mold..might help?

[@tedgunderson67]

I felt like 24 hrs of darkness the day before harvest significantly lowered heavy “fats” that were present in the flower. My experience is limited but maybe worth looking into.

[@MR-puffnstuff]

Good inch for inch grow light coverage keep it close. In my lifetime i noticed plants grow the most during the lights off period. But to say 2 days of darkness sounds like groupy science.

[@denislabelle3853]

I always do the 24 hours darkness with water restrictions at the end. The plant makes the buds stickier in a last ditch effort to save the buds.

[@ronlasting1203]

How deep should you mix in the dots? All 5 gallons of the soil or the top 3 gallons?

[@ScottyReal420]

You can full mix them in to the media.

[@glen.simpson]

crush them like a pill and mix some powder in a compost tea...... tell me

[@timj1196]

Where can I get some grow lights bro and what do I neeeeeed..🎄

[@penguinpog6674]

eBay mars hydro 2000 to start in a 3x3

[@loverofthestickynugz6608]

Keep the awesome videos coming guys

[@ScottyReal420]

We will keep making them as long as you keep watching them!

[@loverofthestickynugz6608]

Love the extra content u guys are killin it never can get enough of Scotty or the dude and of course grambo on the keys helping make it happen

[@justins712]

I feel that 24 hours darkness. May preserve some of the more volatile esters that normally are lost during lights on. I think more light wouldn't work for certain cultivars, and I believe genetics plays the biggest role in all of that. It just seems like the light would be essentially cooking off terps. While darkness would be causing stress as well, but while being less degrading to the actual cannabinoids in the trichomes. I'm just gonna try multiple different methods and see what I like best. That's probably what we all should do.

[@Sativa4work.Indica4play]

Real Deal Scotty!!!!!! Thanks bro. I like how you take a tough class like weed botany. And make it as simple as gym class. I sure would like to see some content on auto seed sellers here in america. It seems to me quality genetics in an auto seed should be available for 2-3 bucks. $50 for a 3 pak or 5 pak seems like clone prices to me.

[@Jay-qn3ez]

I was on 24hrs on for roughly 3 weeks started to get purple stems. Dailed in 18/6 purple went away but growing slowed down a bit. 2 different strains ph 6.8 no nutes just water once ~5days a week

[@smokemesradio6905]

The actual theory is "a plant produces trichomes at night when it's dark and cool as a sunscreen to protect in the day when the sun is out and its warm wich causes trichomes to deteriorate" if you've ever grown outside you know those cool longer nights give you a huge increase in trichome productivity.... if it's warm at night and hot during the day you will see less production of trichomes..... thats the theory as I've been told and read, no I've never tried it but people swear if you can have 30% humidity at 68 degrees for 48 hours dark you will see a color and trichome increase 🤷‍♂️ more light will give the plant less time to produce trichomes and more time to deteriorate trichomes I guess

[@ActionJackson420tx]

Is there a light or timer that mimics outdoors when set

[@ScottyReal420]

Not sure about a timer but there are new LED lights coming out on the market that are mimicking natural sunlight.

[@ActionJackson420tx]

U rock scotty thanks