LED vs HPS 2021 | 600W HPS to LED comparison

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A comparison of 600W HPS to 2021 LED technology.
I compare spectrum, PAR output, Total cost and Heat output of the classic 600W Digital HPS Grow light and a 2021 LED grow light.
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[@MIGROLIGHT]

Hi, Shane here. Thanks for watching, Please hit the like button and subscribe here: www.youtube.com/@MIGROLIGHT?sub_confirmation=1 Buy my Grow Lights here: migrolight.com/ Follow us on: Instagram:instagram.com/migrolight/ Facebook: facebook.com/MIGROLIGHT/ TikTok: www.tiktok.com/@migrolight

[@backupintheday9710]

HPS is far superior and you know it is.

[@english1midlands]

HID lamps aren't better.They certainly bulk your flowers up more but the quality from LED is far better especially compared to HPS like you're saying.@@backupintheday9710

[@bruceholinight7978]

Same here 68 year's old and hard core metal halide grower since 1979 , switched to LED last summer and I'm over the moon impressed , had a 1000 watt cmh de , pulling 1000 watts from the wall , constantly struggling with temperature , now 23c , 650 watt's from the wall and my buds are the best I've ever grown , double yield , 4" fan !!

[@pedclarkemobile]

What did u get from the MH roughly? Heat hurts yields so an HID is pointless without proper extraction. Also HPS bulbs so cheap (half MH) did you never ever try one?

[@bruceholinight7978]

@@pedclarkemobile I only used a metal halide in the 70sanf 80s till I found out about other hid lamps , under my old MH , 1 oz , in my 5x5 under CMH 1000 watt de , I got shot ,2-3oz but the bud's were always washed out from heat , quality was good but too many problems with heat and most of all coverage , my Fc6500 bar light is only about 3" from the edges of the tent and every plant grow these same , most hydro shops don't carry hid any more on my area except used ......and cheap !

[@pedclarkemobile]

@@bruceholinight7978 wow those numbers are low! I know genetics have changed alot, since about 1990 hybrids suited to indoors came to market. A double ended 1000w should get 36oz in the right environment... 18oz would be fairly standard in a tent. Big extractor with thermostat, decent substrate & nutrients. Have u tried any hydro systems? Even handwatered perlite & vermiculite can give really vigorous growth. I've been at it less than 10years & tried soil, Coco, hydro to get more yield per foot, been in alot of different locations but even with staff discounts when I worked at hydro stores I never bought an LED (luddite) but friend with same clones got less dense bud & less weight per foot but they saved power & didn't have to worry about hot spells in summer. Different strokes...

[@bruceholinight7978]

@@pedclarkemobile That's 5 plants 3-4oz=15oz , now 5-8oz x5 plants , but I'm old as hell and lazy so not sure of the weight exactly , to sum it up I got about 15oz with the CMH and now 40 oz if m not lazy and mainline everything , anything before about 2012 I had old school stuff and doesn't compare to these new lights and nutes ! I did win two local cannabis cups using the CMH so it is a great light just too much heat and power , only us a 4" fan now ....turned down !

[@pedclarkemobile]

@@bruceholinight7978 ok! That makes more sense! That's a very respectable gram/watt ratio. I was thinking that you'd be running out between chops with a 1kw lamp running! ... No danger of running low with a box+ per chop! Must be a good 4" filter to scrub a 5' tent in full bloom.

[@Rob-lj5wy]

Nice breakdown on cost & efficiency. I was a diehard HID guy for 30 year's and after switching 2 year's ago ....I'll never look back. Thank's

[@bleirdo_dude]

Is there a difference in final product HID vs Led?

[@Rob-lj5wy]

@@bleirdo_dude Not that I can tell. The Durban Poison I've grown for 7 year's looks, taste exactly the same but I do get a better smelling product & higher yield with the LEDs. I contribute that the significant reduction of heat not burning off the terps.

[@bleirdo_dude]

@@Rob-lj5wy Cool. Thanks for the reply. I always heard of it being a different taste, but never got details.

[@bleirdo_dude]

@Living Soil & Solventless Extracts Damn! Your Nugs are like that. You should see a doctor for antibiotics, or probably castration so it does not spread.

[@Rob-lj5wy]

@@gquin9487 I agree the Sun grows great product in a greenhouse but being able to control your environment makes a higher quality product in my opinion. It's kinda hard to do that in winter not to mention some state's growing outdoor will get you a lengthy sentence in prison.

[@user-fb3jz2bn2q]

the video we have all been waiting for thank you migro

[@jonaddison7062]

These migro lights are unbelievably fantastic, particularly the hanging arrangement.

[@ElementalGeneral]

I'm so happy I found this channel!

[@rayneman9169]

Posted to my group, hopefully some people get to see this, much love Migro 💚🤙🏼✌🏼

[@jamesbowman9806]

I never used LEDs until the last few years, I just never saw desirable results. Now, I love the product and can afford it on my fixed income. Thanks Shane, from the economically challenged! Godspeed

[@kylemcauly7663]

love the vids! had my array 3 for a week now and is awesome!

[@davidvanderlinden18]

Thanks Shane marvelous content ! Alot of effort put in,cheers 👌

[@carbonraptor5747]

Honesty, so refreshing these days. I can appreciate that. Thank you

[@timothymclean9671]

You

[@engell3707]

Scotts are pretty honest people.

[@DiegoMorales-jh1qi]

This is the best grow light reviews channel ever, by far...

[@magnumopus9631]

great video as usual thx so much for your hard work and time migro,you have no idea the people you have helped understand all this in 2021

[@jamesetheridge3487]

You need to make up with Liam and get oasis back on the road!

[@jasonmare33]

haha!

[@RobMitshi]

ur on it

[@cannaami3892]

Nice one 👍

[@filipsimovic7961]

you are most honest reviewer on youtube in general. Great work, i hope ill try out your products one day

[@m.b.boyack2228]

Great video Shane. Anyone who doesn't appreciate the multitude of variables involved when comparing these light sources where median results are dependent on exactly what variables are initially considered, have unrealistic expectations from the start, wanting an 'ultimate answer or solution' to a question, do not understand the process. Cheers

[@cannabudgro8806]

Great breakdown! I sometimes like using LED's for veg and adding in an HPS for flower in the winter time.. this set up has produced some beautiful heavy flowers for me!

[@chrisbethmann3955]

I have hops in one tent to use for “problem” girls. It can save flowering plant issues

[@drobro4396]

how did your veg go with led?

[@chrisbethmann3955]

@@drobro4396 really well, I run 3 tents led, think the blue is beneficial

[@drobro4396]

@@chrisbethmann3955 Thanks bud. Ive been using LEC for the last couple of years. I just switched to LED. Im just a bit concerned with the veg grow. I noticed after veg in lec my flower would go deficient in flower. Thanks for the info. Greatly appreciated

[@mrloverman82]

Great vid shane, full of knowledge. Im on round 5 with the array now, and its still blowing my mind. I look forward to keep learning with the aray ☀️

[@hondenzondertoekoms1]

I'm active on a local growing forum. We have a dude growing under LED construction lamps. 30 euro's for 100W. He seems to be getting similar results compared to HPS.

[@kreparAZ]

excellent video Shane!

[@jayritchens5910]

Well I hope you guys start selling in Australia, you are by far the best and most honest reviewer ever. You have truly gained the highest respect in the hydroponic space, no cheap false advertising and true figures document in a perfect way.

[@clivepegler1369]

they are easy to buy from Ireland to Aust...i just did..... they use FEDEX, very reliable. Besides a local retailer would probably add 50% or more.

[@brendamurphy5685]

Thank you for all the hard work you do for us and your honesty.

[@dcsc4895]

your voice and accent, is just a cherry on top of the knowledge cake of goodness you serve us.

[@BuddyCalyxed]

Good vid..you seem to be having a creative week, what's the sativa responsible in the house and what was the stretch like? 😃

[@fabianfacchi8220]

Perfect as usual thanks

[@getzvalerevich6565]

Good stuff. Thank you for your work

[@sxyangeleyez]

Thank you for all the conversations

[@benji321uk]

your channels content and video quality are incredible

[@craiganderson3952]

Awesome educational vid. Thank you 😀😊😁

[@cookiegirlgrows3619]

Love your videos!

[@lanceowens5902]

Shane no matter who or what one is talking about someone else is always going to cop an opinion I myself appreciate the time and work you spend helping us make better first choices !! And this is just my opinion but you are albopepper seem to be the most info divided the research done and it's very clear of the 2 of you who is the most educated on the grow light subject but I really appreciate what you do with your time so thanks again and keep up the great work brother

[@harrisonschapelhouman3476]

Great video thank you!

[@Spiderdan-59]

I love (HPS) they gave me some fantastic bud, but since changing to (LEDs) and after testing the end result I thought the leds gave a better quality at the end, even though hps does give excellent bud but at the end of the day I prefer (LEDs) I may still end up hooking up my hps at some point in time well see ??🌿🔥💨🇬🇧 another quality video shane💯🤜🤛

[@frostyjakfarmer473]

Fantastic video, LED's are definitely the way to go! ✌

[@jeff7279]

Thanks for the info. Great video.

[@williamhamilton8111]

I really appreciate what you do you make it more clear for us layman's I would like to ask you a question have you heard or what do you think of the optic LED slim 650s I have one purchased and is on its way to me I would like some feedback and thank you for all that you do 🐧

[@grettirgrattmards2348]

Went from 600w hps to 600w Lumatek Zeus pro. Huge difference with lower heat output and more even illumination. Yields increased significantly too at about 30-60% improvement in weight and better produce. Never going back to hps.

[@dutchgrower2971]

I also have a 600 watt hps, and i want to get the lumatek 600 ,not the pro but the normal version ,shout i do it ,i am also looking at the 465 watt pro versoin ,my tent is 4x4 foot

[@grettirgrattmards2348]

@@dutchgrower2971 the 600w is the way to go for your sqft.

[@dutchgrower2971]

@@grettirgrattmards2348 also the normal 600 watt version? the pro is a little to expensif for me😊

[@grettirgrattmards2348]

@@dutchgrower2971 Honestly the difference is miniscule. The pro version just has more of the far IR Leds. The frame and power supplies are completely identical.

[@dutchgrower2971]

@@grettirgrattmards2348 thank you so much for your info and help , i am convinced i am going to buy the zeus 600 i hope it will bring me good , i will definatly give a review😀

[@Sam-gh9zk]

Your content mate is the best

[@froggerfrank]

Thanks for sharing your thoughts Shane!

[@Willie-C]

Just bought array 4 couple days ago cant wait

[@JesseJames83]

Not only bulb replacement, but the cost of dealing with all that extra heat too. Extra electricity for fans, cost of hardware to exhaust out of the living space, AC electricity cost, and terpene loss, etc.

[@kathleenrobertpogue6818]

When you add up running cost and upfront cost you have to run led lights for 2_3 years before you start to see any saving. as far as running cost goes there is about a 30$ difference. I don't know about you but i grow weed and not micro greens. i couldn't care less about that 30$

[@NN-ou9jc]

Thank you for all the info you put out there, really helps to get unbiased facts on all of this. I am switching from DE HPS to LED for flowering, I do use LED for veg cycle and works well. I will let you know the results in a few months.

[@NN-ou9jc]

@@jasonfabish189 The ChilLED is AWESOME same genetics and the flowers are tight and big! Very impressed with the new LED light!!

[@NN-ou9jc]

@@jasonfabish189 Yield was good, this was not my biggest yielding strain but 162G off of it was comparable for sure

[@aidangallacher9049]

@@NN-ou9jc hey dude... Just wondered how you're grows have came on recently with the LED light? Did you use led during vegetative stage aswell as flowering? Also overall how did you personally compare the hps lights to the led's? All the best mate

[@NN-ou9jc]

@@aidangallacher9049 Yes it has been recently. I have always run HPS/HM until the last few. I have Led in veg and flower. I will say this about the LED that you need to get a good one for flower. There are many out there but I got the ChilLed from growcraft. Expensive but way worth it. I use my first LED for veg but is not good for flowering. Hope this helps.

[@aidangallacher9049]

@@NN-ou9jc thanks dude! Yeah I heard you have to get a good LED like spend the money... I seen few good recommendations 'zeus 600w pro lumatek' and 'Mars hydro Fc 6500'? It's weird tho like you say Led good for veg stage but not so good flower stage. I've seen ppl say opposite and even ppl say led is better for veg stage but the transition to flower stage needs to be 12/12 off first 2 days with no temp increase then basically 10% increase every 2nd day till 100% and lots of ppl love the led outcome over HMP /MH. Even ppl say their yields increase massively with led!!

[@keithrudd6330]

Cheers Bud. Integrity rules..

[@mikkeeyy3421]

One of the best if not the best channels out there on any platform. I have never used one of your lights I use crecer metrix 300, an ES 180 V2 and mars hydro ts 1000 and 2000 my favorite is the ES 180 V2 and the metrix 300 the mars hydro also do a great job. I would love the opportunity to use one of your lights.

[@eheroi]

great content . thank you

[@simplehomegrownhomestead6148]

I use both but if you need heat, as I do ar times in New England, HPS works well.

[@swim.p8631]

It can help but once I hit 600 of led covering 6x6 didn't need to worry about heat so much vs hps and it was still cheaper to run a electric heater with a thermostat in the winter

[@funkfarmer7125]

Exactly, people don't seem to understand some people actually welcome the heat of the HPS. The cost of cooling them and running them is negligible compared to re-mortgaging your home to buy one LED fixture.

[@the_gold_canopy]

Good episode. Just made the switch from 1000w hps Cooltube, over to the GC e720 and controller. 🌱

[@jitslifts7748]

Yep thats what I have most of too but also 2 fluence bio spyders and the gavita 1930 but like my gc 720s

[@the_gold_canopy]

@@jitslifts7748 the CT1930e was pretty disappointing, high heat, has to be set at 8+ feet to get decent coverage, and you need the EL1 gen 2 controller to operate it properly, better off with 1700e, ROI e720, or a Photontek 600 or 1000. 🌱

[@jitslifts7748]

Ya haven't had a chance to run the 1930 yet but I'll be running it next to my others this next run I couldn't pass them up though some one sold them to me for cheap I basically got three for 1200 or the price of one hopefully its not too bad I was planning on keeping it at 4 feet like it said in the 1930 vids

[@jacobfreeman3461]

with power cost rising over 50% this year alone my guess is most commercial growers will have no choice but to switch to led to keep the cost of their product down. another cost you did not add for using HPS is the fans or ac to keep it cool, but hands down the buds are much bigger using HPS than using LED lighting. both have their pros and cons.

[@roomueller7305]

You should be using fans whether you need to keep it cool or not. Helps get air to the plants, allows them to grow bushier and larger leaves, and helps to strengthen branches

[@karl532]

Great video!! I think most growers by now have accepted the fact that LEDs are no longer the light of the future, they are the light for the present! HIDs work sure but LED is definitely taking the cake... Not only do they take less watts from wall for same or better results, you use less watts from wall controlling temps. Higher upfront cost is the only issue, however worth every nickel!!

[@funkfarmer7125]

I'll use the extra power to run my HPS's thanks. Unless you really struggle w heat or can't pay an electric bill the LED's are useless.

[@karl532]

@@funkfarmer7125 your ignorance must be bliss eh! There are so many benefits of LED over HIDs, its not even comparable at this point, maybe a few years ago. Also not to mention the fact that we are now only staring to unlock what spectrum does to the cannabinoid profile because of LED technology. But hey everyone is entitled to their opinion. ... even if they are wrong. Happy growing👍

[@sunnohh]

@@funkfarmer7125 you should try with some modern led arrays, I think you be shocked at the increased yield and flavor

[@danieladams1733]

Fantastic comparison Shane. I’m a 600w hps user myself but I’ve been on the cusp of switching to led. Bottom line Shane just yield performance does today’s 650watt example lumitek Zeus fixture kill the 600w hps fixture??????

[@jesusc4384]

great info as usual, thanks a bunch! I am currently using 1 or 2 400w HPS/MH lights and have thought about changing to LED but my power cost is quite low (6c/kwh) and I have very cold winters so I enjoy having the additional heat during that period of the year. It's good to know that LEDs have caught up with HPS though.

[@roomueller7305]

Same here. I had to move my setup to my basement because more people would be coming in and out and other stuff, but even when its 80 throughout the house its still cold as hell down there. My plants definitely didn't like it at first cuz all I had was an Led but I litterally went out and got an hps to keep the room a bit warmer. That and I felt like expanding and I dont necessarily need a tent with what I bought

[@billyballsup2685]

Your got cheap power . Try Australia we pay 36cents kWh. We are getting robbed.

[@lemmyrichards9477]

@@billyballsup2685 Still better than uk prices 32p kwh with a 55p standing charge each day😱

[@matthewwhite876]

Nothing stopping you hanging the hps in the room with an LED in winter and turning both down to adjust temp and par readings. I'm going LED this year for cost and par reading across a 3x3ft with a 400watt hps is pretty bad in comparison too. Still awesome used em for years but I'm over the heat exchange issues vs usable light and the bills

[@critical9862]

Excellent video very interesting.👍

[@Photosyntech]

I've been saying that if you are new to growing LED is the only choice now, with the spectrum and efficiency available vs. cost.

[@pardonthedank]

great review

[@tombrady4942]

Thanks again Shane, be interesting to test the Maxibright far red & UV led add ons when they come out in June.

[@MrE1981]

What's the point? More than 4-5% far red causes stem elongation and artificially increases leaf temp, and only UVb best delivered in pulsing form, aka fluorescent tubes, is helpful to increase terpenes in flower.

[@RocketNothing]

Because 730 infrared increases Emerson effect, elongation isn't really an issue if you know how to grow properly. UVA is beneficial to thc & resin production. Its a wider spectrum which is closer to sunlight.

[@kennykline9699]

Have a 150watt hps. Could it be used to grow 1 plant or maybe start seeds? Uses 110 for electricity. Maybe I could use it to read the newspaper every evening? Think in I could use it to grow 1 plant? Any advice appreciated???

[@steveletson6616]

Nice video. Will you please send a couple of your lights to LED Gardner for testing.

[@MahatmaLevolence]

@MIGRO All i want to do is grow a few for myself and 600w HPS are roughly sixty quid on ebay. I can no longer work. How much are your led equivalents? I can't splash cash i haven't got so it's got to be piecemeal with no room for error, what exactly would you recommend i use for yield e.t.c. in my position, HPS or LED? Thanks.

[@petergill4744]

I'm vegging three plants using a Omega spectra G100. Now the plants are growing assymetrically I need to purchase a stronger budget LED to compliment a Spectra G100 in a 4x4 Homebox ambient. Again I'm on a budget. What would you suggest? Excellent Video as always Shane. Thanks from Joe King Park, North Wales

[@chris432t6]

The audio is low and muffled but still great content as usual. Thank you Shane.

[@onepalproductions]

There are additional cooling costs with HID also.

[@devjyarn]

Thanks Shane, Really interesting video with lots of stuff to think about! I personally believe that supplementally lit greenhouses are going to be the most efficient compromise for growing. What are your thoughts on using sun/LEDs together? Can you give me your suggestions for fixtures that would be the best to use in a greenhouse scenario? Fixtures that are waterproof, passively cooled, and have a lens are the only factors I've weighed so far.

[@kennc.4221]

Great question. I wonder the same. Mostly Sun pull them in for darkness

[@stemrust]

Something I didn’t hear mentioned nor seen in comments is that disposal of HPS and MH bulbs at least have mercury in them. I’ve had a greenhouse re-lamped in the past and the disposal cost exceeded the price of new bulbs. LED are still e-waste, but not toxic waste.

[@rickster9065]

Well done for disposing of them properly rather than chuck them in the bin, good job my man

[@anthonymustane2824]

Hi, I need some advice. I have been using digital s.e. 600w hps for many years now. A friend loaned me an older Lumigrow 650 with adjustable white, red, and blue. I am growing cannabis in a 4x4 tent. My question is , should I use the older lumigrow or upgrade my hps to a double ended? I am on a budget and can't afford a new high-end LED. Any advice is appreciated.

[@vurtch]

Double ended hps imo would out perform older blurple light even though the Lumigrow was top of the line for it's day

[@joshua1977ize]

Your lights kick ass brother!!

[@polecattgenetics6252]

Double ended ceramic HPS is vary hard to beat for bud beefing. I will have to take you up on this & give a high quality LED a go in our rooms this summer. I am paying more for AC already than a LED setup would cost in a few months.

[@lemmyrichards9477]

Did you try the led out?

[@outlaw1179]

@@lemmyrichards9477 ^

[@indoor420]

Result is??

[@bradleymills5765]

Hi Shane, great breakdown of the trade offs. Do you know: How many HID bulbs would you need to replace over a 3 year period? Assuming HPS in a flower room running 12 hours/day.

[@jlancer1501]

I think he mentioned at least twice?

[@carbonraptor5747]

He said 2 maybe 3 👍

[@nickbennett8276]

i do it 6 times in 3 years.... they lose alot of their intnsity and color after just a few hundred hours.

[@juliankirby9880]

Depends on the brand. Using cheap 15 dollar bulbs, 4 times a year, using 50-60 dollar bulbs 2 times a year. I know a guy that runs bulbs till they burn out, all the while complaining about low yields and other problems caused by weak lighting.

[@pedclarkemobile]

With a decent digital ballast and quality bulbs, you should change bulbs about once every 6 months (using 'boost' setting or dimming the bulbs tends to shorten the lifespan of bulbs, best to only use the intended wattage for the bulb).

[@mariojuana-mutated-genetic7091]

I would love to see you do a review on the marshydro TS3000 !!!!

[@PsychdelicSpore]

Watched a deal about UV and the photosynthesis process plants use. Marshydro doesn't use these values in UV for best output for the plants. The dark UV red and green with blue boosts the plants growth. It was over a very well known light sensor company called "Apogee" about their new PAR meter and about spectrum.

[@rahkielsingh6028]

not the fc-e series

[@faithduperron5905]

why mars pumped out b.s. for waay too many years. fuc em

[@goodtogrow7774]

What I spent on my electric bill from my 1k watt hps just in flower I could've bought a HLG Scorpion lol! Wish I did that instead.

[@Dragondezznuts]

Hid lights have died a fairly short death considering how long they were 👑. Still have my 1000 watt digital just in case. Still something to be said about the ir radiation they give off.

[@declancrafts3616]

I was 10 years with HPS switch to LED2 years ago so much better.. for the same running cost of a 600 W HPS I have managed to get a 1200 W LED blue and red light and 2 600 W LED true spectrum LED lights. Made by koscheal..!! (Took a wile to find the well made ones) so overall much more light coverage lower temperatures. Definitely recommend. One thing I found that might be useful for some people is that the lower branches don’t do so well so I found trimming the lower branches in the growth stage made for a much better result & yeild.. also remember not to over water as the lower heat output causes the soil to stay moist for longer.. ✔️

[@randylivingston1504]

Good for you on being flexible in your position on tech changes. LEDs will come down in cost and be the winner. HIDs we’re great, but will be the Chevy 454s in the future.

[@graemedevine9651]

I'm using Sodium with a 50 watt sunblaster nano beside it with organic fertiliser made from various kitchen scraps, results so far are impressive.

[@davedennison7386]

Cool stuff,mate...you certainly convinced me,lm waiting for my aray 8 pro to be delivered...those summer temps have knackered my 600w hps grows before...thank for your humility and honesty👍

[@cheflife420]

💯 correct great video

[@salovila5328]

I´m still struggling with leds. Working with Lumatek zeus 600w: the new 2,9. Still can´t get the bag appeal as with double tip 630w LEC. I manage to get the same yield. Growing in same area as with 630w LEC 1,2 square meters. Could this light flower 1,5 square meters? It seems a bit optimistic. I always end up with light burn or pale green leaves by the end of harvest. Not pale green from lack of nutrients, but light burn. Don´t know if its the fans, the proximity to the lights ( try to keep it at 50cm) low temps during some light hours (18-19 celcius) 2-3 hours a day. C02 is at constant 1700ppm

[@phil513795]

Hi there looking to build my own veg led light but not sure which led to pick they have a 3000k 4000k and a 6000k its only going to be used for vegging ?????

[@vhnguyen9447]

Thank you

[@bigga1977]

Thanks for this I still use my hps

[@markb4546]

Great video the share price in HP's has dropped ,never used HPS ,did my research , the information is out there ,but it's great for some to come out and explain it simply ,led all the way SWIM is using the old Migro cob with great results If you buy cheap You buy twice As my nanna used to say Happy 420 Shane Keeping us all lite

[@nickspeakstruth133]

That’s a really good saying and I’m going to definitely pull the trigger on the second expensive piece of lighting today because of it!

[@easytoslip6877]

For small personal grows LED is the only way to go. The simplicity of the AC and environmental controls due to the lower heat LEDs is a huge benefit and cost savings for most. You could have made the 3 year cost even more lopsided... I don't care about HPS, but every one of your videos is educational in some way. Thank you.

[@MikeParentLeap]

@@flyinggoatzcanfly7645 did you ever touch one that’s on?

[@unclejake1476]

@@flyinggoatzcanfly7645 how many 150w hps do you need to match a single 700w bar style led? How will the heat be at that point?

[@gregkramer5588]

@@unclejake1476 The numbers are there., just do the math.

[@vc6632]

would have loved to see you do this comparison with a double ended hps dialed down to 600w

[@brianmorgan1344]

How many migro pros do I need for a 4x10 and how many for a 3x5? Please and thank you?

[@honawikeepa5813]

I use HPS just because I have one. However, my dream is to have a quality LED. Cheers from New Zealand.

[@quentinaskin6752]

Herbal house in Auckland free shipping in nz chur.

[@juancadena5950]

wats is your recomendation for faster and quality

[@Hyerven]

What do you think would be the best choice for a 5x5? I find it difficult to make a choice .... some opinions?

[@QuackkAttakk]

Go to horticulture lighting group

[@lp6132]

Lumatek zeus pro 600w 👍🏼

[@seanrichardson6681]

Hi there migrow, very good comparison, Question regarding minimum air exchange in cold climates, you mention turning intake/ exhaust fans to a minimum speed to maintain temperature, I'm wondering how this can be done successfully in climate where its common to have outside air temperature of between 5 to -10 degree at night using LED alone. Yes we can set the fan speed to say 1 air exchange every 3 minutes but this will not maintain a growroom temperature of 25 degree, if say we reduce the fanspeed to say 1 air exchange every 10 minutes perhaps/maybe we can get a stable room temperature of 25 degree but that will reduce the Co2 concentration in our growroom as the plant consumes and the extra PPFD produced by the LED becomes unutilized. As we know when it comes to photosynthesis there is a direct relationship between the PPFD umol/m2/s : Co2 ppm ration. What would you say the minimum air exchange would be maintain Co2 @ 400ppm in say a 2 cubic meter tent situation ??

[@MIGROLIGHT]

Sean, my experience is you don't need to worry about CO2 as it does not reduce rapidly with low airflow. I have run tents with no forced airflow for days at a time with only small reductions in CO2. Maintaining temp is much more important than forcing air through to try to maintain CO2

[@mrburn6119]

you mention the problem seems to be the cold nights, when is your daylight cycle? Plants will only uptake co2 on daylight. you ideally want an 8 degree difference between day and night for best oil/terp at the end. A water heater in a container of water can help keep the temp warm at low cost. As migro says temps (and humidity for me) are the main things to get right. Liken it to a sports car, would you fit (at extra cost) a racing air filter (co2) to a sportscar, when you only use E85 fuel?(low temp), (in case you didn't know 85% ethanol fuel (E85) has a far lower energy output than non ethanol fuel and would also damage a high performance engine.). IMO they only crave it when the temps are hot, and is useful to sustaining them above ideal temps, but every one is as individual as humans. Good Luck

[@garyhawkins6612]

I have a question that someon ehere might be able to answer. I have never looked at L.E.D lighting. With HPS bulbs you needed a ballast. Its likely a noob question but Do you need a Ballast for L.E.D ?

[@joefrenchcore386]

Hi I'm looking to replace my 600 watt hps with an led light what watt led would be the equivalent to a 600 hps? I was told 300 watt led would be sufficient,I don't wanna spend money until I know for sure though,any help is appreciated,thanks

[@carlossalazar2358]

At first I didnt have good results with led but I was treating the environment the same as hps . my fan broke on led chamber and a few weeks in led was looking way better than hps. also on my first led harvest well size wasn't impressive quality was by far better

[@Zhaturianvisionz]

I have been using hids for about 10 years. There is no question that today led is the light of choice. I was very skeptical until i tried the roi e680 out. No challenge. These lights are awesome. I am always relieved to know that heat is not a issue and i am not worried about high bills; plus i am getting 2x better results If you say different imo, you simply just cant afford a top tier led because if you have one or can afford one, no way you oppose led.

[@funkfarmer7125]

Spoken like a true dullard. "Anyone who disagrees is wrong." I've used "top tier LED", you can keep them. HPS still reigns in the flower rooms, for a reason.

[@rickster9065]

​@@funkfarmer7125 I know this a year old message but do you only use hps for flowering or have you ever tried cmh ? I was thinking LED for veg and CMH for flowering or would you say just stick to HPS for flowering? The buds under LEDs look great on grow vids (colourful , frosty ...) but are quite a bit smaller than HPS.

[@fightdhr8866]

Nice one..

[@mikko3693]

I still love my HPS with secret jardin daisy 100 😁

[@MIGROLIGHT]

Thats a good setup, probably the best 600W HPS setup I have ever tested for the money

[@mikko3693]

@@MIGROLIGHT One thing that you could test is a secret jardin daisy with the Ceramic Metal Halide | Maxibright 600W to set a new record for the old tech 😏 thank you! ❤️

[@homewordbound4970]

How long have you used your daisy reflector? I've read some comments about mylar discolouring and being fragile after 6mths use. Have you found that to be the case?

[@mikko3693]

@@homewordbound4970 over a year, ive noticed that in 4x4/120x120 you have to attach strings from reflector (from the sticker part) to tent corners so it cannot spin in wind. Ask if you need more info. Its really super reflector for a old tech :)

[@mikko3693]

@@homewordbound4970 and about mylar just keep it clean from dust i havent notice any fragility of the mylar its strong just need to have a tower fan or something to blow hot air around 😊

[@darcypotterpotter6214]

i have purchased two LIGHT SCIENCE GROW 300 to upgrade from the 1000watt HPS in my 5x5 tent i purchased two GREEN SUNSHINE V3 180 to replace my 400/600WATT in my 4x4 veg tent and one Maxsisun MF2000 for my 2x4 propagation tent ,, the light wattage is a saving for sure but the main power saving is COOLING and even in Northern Alberta Canada summer time my 4 ton split A/C ran full draw and using air cooled hoods works with the A/C but that means one more 6 inch fan per light so again more power use

[@michael2305]

I'd still rather have the efficiency of the LEDs and some extra costs for heating up the room/tent in the winter rather than having to use air conditioning in the summer. But I get why HID-Lamps can be an advantage in that regard.

[@pedclarkemobile]

Well summer is barely a long weekend in Ireland, running at night is normally enough to stay in the comfort zone. Plus the chances of having to move/ rapidly dispose of kit if say a neighbor gets busted or landlord demands access for an inspection etc etc If you have to fit out more than a tent or two the LED initial layout is just too much. Given the price of produce in Europe the electricity cost just doesn't feel expensive although very high power usage can be bait for cops.

[@The_O.G_Cyber_bully_24Hr_Ban]

@@pedclarkemobile pay your bills and the police will not be informed I was using 6k in the loft for years when I changed electric companies they sent a rep around to try and get me to stay believe me or not a few weeks later i had a knock on the door and they said I was the best customer in the street and the cheeky coconut asked why i used so much electric I just said I do lots of welding on cars for people. The problems start when someone in the street starts bypassing the meters the grid can pin point the loss to with in feet of the box even more so now with smart meters. if the grid is losing power the will send someone to the area to investigate closer and if you are the one bypassing eventually you will be found. I remember a friend hooked up to the mains in the ground outside, his wife called him in work saying the tar mark on the drive was melting and bubbling the cable was so hot , its extremally dangerous The power from outside is 400,000 KV mains line> to 240V inside the home look on youtube excavator versus High-voltage cables see what happens when you cut through one its very pretty 😁 I used to go to town to pay the electric and gas not to draw attention in the local post office just pay your bills and you will be fine

[@frankbrooker6569]

What's the CRI of LEDS ? Is it in the 90 like cmh?

[@DJTechnoboom]

so high intensity is really better then spectrum?

[@joseantoniolinan6865]

Sin duda MIGRO es el mejor de 😊👏👏👏🏆🏆🥇🥇🥇🇪🇦🇪🇦🇪🇦

[@liamgorman84]

I have a 10x10 gorilla grow tent, was going to run 4x 1000w de lights but now thinking of doing 4x 600w lights and fitting in an led between each light to fill the gaps, would you say that is the better option and if so what led lights would be best

[@stevenhinostroza2955]

I would say run all LED but not those BS amazon quantum board ones. Don’t get me wrong they’re fine for small grows (if they use good diodes) but any grow of that size or bigger should be using 630w CMH, 750w-1000w DE HPS, or 650-720w LED 6 or 8 bar strip lights. If you have the money to dish out go for the strip bar LED’s. You can get relatively good deals on Alibaba or one of those chinese sites on LED fixtures that use the exact same diodes, drivers, wattage etc as the big brands for a fraction of the price if you wanna save a buck, nothing wrong with em. Otherwise, Growers Choice or Yearld have relatively cheap LED’s for under $900

[@liamgorman84]

I’m very familiar with what size light in different size areas I was just wondering rather than 4x1000w de hps lights could 4x600w de hps and 4x led lights do the same thing but with better end result?

[@bigredinfinity3126]

I like the idea of when a bulb burns out and a big fan of using decent bulbs like lucagrow. if a led chips fails you can't just switch it off and replace them