13:44 wouldn't it be easier to just keep adding the ingredients to one glass rather than cleaning it every time. Simple maths?

Great video! Can you also use commercially available water glass/liquid glass/sodium silicate? I have 37-40% available. Other sources of silicate are really expensive and hard to find (EU).

😊

Hello, can this formula be used to grow lettuce? Greetings from Türkiye

Just get to point my God

Great video, thank you! How to adjust the weights to do smaller/larger batches? say 100ml or 500ml? Also, I know it has been a while since you posted this video, but would love to learn how you calculated these weights!

What concentration would this be for example 5-6-8

thank you. i am wondering if its okay to do the gypsum first in the water and after that adding CalMag supplement and all other nutrients? thank you

Aloha Dr. Daniel, Fernandez, Thank you for taking the Kratky nutrition of larger plants to a new level. The information your research provides is like a gift from above. How much would the estimate be for a recipe for Hemp in the vegetative and flowering stages of growth? Thank you for your service making modern horticulture great in 2024,.

@ScienceinHydroponics how is possible that uu don't have to adjust the pH ?? Why this instead is necessary in a recirculating environment???

@ScienceinHydroponics could you show how you setup the nutrients into the reservoir and the pH?

@ScienceinHydroponics does this goes into the water reservoir??? Or is it used just to calibrate the meter?

During flower the PH just stays so low, even when I put in 6.3-6.5.. so that’s not the answer.. it would be nice to know what the answer is..?

@Science in Hydroponics do you possibly have any information in regards to the amount of air allowed into a Kratky system? Would there be any benefit to exchanging the volume of air above the water level with fresh oxygen rich are at some interval? Thank you for all of the great information you are making available!

Thank you

Thank you Daniel. I am trying to spread the word that the expensive products are not required. It has gotten to the point where manufacturers have lost the dialog and don't include the word stabilized on the labels of these products. I have heard so much misinformation such as products other than stabilized MSA needs to be broken down by microbes before becoming available and this is from someone I am nearly certain knows that this is not true, someone who has a controlled release formula fertilizer on the market and a beneficial microbe additive product. Even with the internet it is true that a lie is halfway around the world before the truth laces up it's shoes. You would think that the use of Silica for plants began with these stabilized products, I had been using Pro-Tekt for years when I saw the first one. Ironically the V1 of this product said to use within 24 hrs of mixing in hydroponic solution, which was the basis as I understood using a Potassium Silicate solution. I use AgSil16H and the effects are undeniable. Was this video produced before your blog post that states that at lower doses it can remain stable almost indefinitely. Thanks for HydroBuddy too, cheers

Thank you for the video, I understand much better.The way I mitigate the effects of runoff is to use the runoff on my house plants and ornamentals. It's not as important for them to be dialed in and surprisingly, they're all doing well without showing sign of deficiency.

Exactly responded all my questions.. Thank you sir

I wouldl like to know if Gypsum will also in hydroponics have the effect of Imbalancing the Potassium and Mg ratios?

Wow. Your channel is the best I've seen on the science of hydroponics and i just subscribed. One question please,; can this methond also be used in a recirculating system growing bell peppers instead of completely chaning the nutrients every few weeks, while having high yield as the major goal?

Do you recommend citric acid or any other acid in powder form instead of vinegar?

Can this be used for coco medium grow?

to add magnesium as you mention, adding dolomitic lime in the fall and horse manure, as well as wollastonite in the spring, will that compensate for the fixation of magnesium and nh4? or is it not indicated?

Liar liar, pants on fire

Hi sir. I have question. What you mean about terminal runoff? Accumulation of run off from early to last irrigation or just the last of irrigation that provide runoff?

How to use Pyrethrin Insecticide powder? This question is for bedbugs inside electrical outlet boxes.

Had a friend say his insecticide (Onslaught and Patrol) killed their tomato plants. Is this true? Can a pyrethrum kill other plants?

great video!

Hello. Do you have any idea how to make it colorful? Like different colors for pH =4, 7 and 10?

I liked the tips on EDTA and sodium benzoate for preserving the solution, thank you!

Is it good for tomato plants

Hi Daniel ✌️ You helped me with germinating some old seeds a few months ago & I was hoping u can help me with something else this time if u don't mind. If u grow hydronically using coco as a medium & ur run off is allways with in 200 & 300 parts per million eather side of intake ec do u really need to flush weekly? Or can u give them plain water every 7 days double ur normal fertigation amount & follow up 1 hour later with a normally full strength feed? I would appreciate ur reply champ. Thanks again Da I'll. Allso in peak bloom period should u feed daily when lights on or every other day? It's canibus Sometimes I'll feed daily 30 min after lights on & sometimes a feed every 2nd day. I think they like the dry back??? day LOUIS😊

You are Awesome ✨ thanks for sharing ❤

I must admit i stopped watching when you said making larger batches is harder and more inaccurate, which seems completely backwards. The smaller the batch, the more precise you have to be per ingredient due to scale precision. In other words, the larger the batch, the higher the precision per ingredient, since you are able to hit the exact number easier. Example: You want 2.225g of ingredient A in a 250ml solution. In your case, you measured 2.200 which is already 0.025g off your own recipe. Now lets say you wanted to make the same solution for 1 L (1000ml). That is an x4 factor, so your ingredient a should be measured at 8.9g. Now lets say you do your video version 4 times, measuring 2.200g each time. Then you end up at 8.8g, or 0.1g short. If you had made a x4 version for 1000ml, you might only have gotten it less wrong, say measuring 8.91g or 8.89g. In that case you would only be 0.01g off the actual recipe. And obviously, the more you scale up while using the same precision scale, the less error you will have. So sorry sir, to me, you do not make sense.

Can I do the mix with KOH/kalium hidroxide?

would not silicone oil make a good surfactant/penetrating agent for foliar/ mygreathanks and blessings

Nice Video mate! How do you measure contens of nitrate, potassium and calcium?? Thanks!

This was an excellent video on this subject. I just chopped 4 cannabis plants, first time running a coco/20% perlite medium (previous amended coco or soil). Didn't water to much runoff throughout the grow But at chop when I did a water flush the runoff ph was super Low (mid 4's) (fed 5.8 in veg/ low 6 in flower)and EC was crazy high (high 5's when I was feeding less than 3.0). The plants finished nicely with an impressive fade and dense buds But those numbers had me shocked and says I need to water to significant runoff in that form of medium and I need to monitor it throughout the grow. Any thoughts? I'll stop by your Instagram and follow ..

The issue I see with the concept of buildup is that the passively uptaken nutrients are, as you said, passively uptaken. If the soil is drying as a result of root uptake, then those passive nutrients are eliminated just like the actively uptaken nutrients, albeit perhaps at a later part of the dry down. Since we do not dry down completely, the passive nutrients will be somewhat built up during the subsequent irrigation, but now they are being uptaken faster than before because the concentration of the nutrient is higher. At some point you would reach a steady state unless there was a point at which the roots could not passively or actively uptake nutrients, or if the steady state concentration was so high that the plants were harmed. In my experience, with no-runoff, the plants can go quite a long time without runoff with no apparent ill health.

You should make a CO2 sensor with the rasphberry pie build

What concentration of vegitabke oil should I spray on my plants?

Yeah very interesting. I just killed my first batch of hydroponics cannabis because I added too much silica and the ph swung hard into the basic range. I couldn't correct it.

Your videos are fantastic! My issue is that my tap water already has an EC of about 1300 so I a, using bottled water. That must be how people do it because unless you have a lab figure out the composition you have no idea.

Great video! Loved the in depth. Question. You say determine the mix then the EC. I already have a mix I purchased that is perfect for strawberries. So it is mixed up in the correct proportions. The EC for strawberries is supposed to be around 1200. Do I just measure it and that’s it? Meaning I have saved a step by buying it already made for the berries.

i can't find #567 Pyrethrin & insecticidal soap concentrate. How can I get this?

Hi Dr Fernandez (or Daniel, if I may). Thank you so much for all of your research, hard work, and demonstrations. I see all of these things as separate efforts and appreciate you for each of these and the motivation that drives you to keep doing all of this for those of us who enjoy it. I do have one request. I've just been appreciating the idea that scaling a volumetric measurement by using the weight of your solvent, is something that I learned in my university days way back in the 1990's. I wanted to ask if you wouldn't mind demonstrating the accuracy and reliability of HydroBuddy. By that, I mean, it would be cool to see you show the desired ppm's of your formulation (in HB of course, as you've shown in your other videos). Then mix the formulation according to the 'recipe'. And then, the part that I haven't seen yet - using the concentrate you just mixed, to make a diluted solution that would be used in a hydroponics system. I would be interested to see if the EC of the final diluted solution matches what was expected in HydroBuddy. And, if possible, it would be awesome to see that solution tested, for content, to know if the NPK (et al) ppms match what was desired. Is that thought somewhat cohesive? I guess I'm trying to say that I am thankful for your work, I enjoy your videos and appreciate the knowledge that you are distributing (for free) but at the same time, my inner biologist is wondering what the significance (or impact on final product) is when my margin of error is +/- 0.02g of some ingredient that is used in smaller quantities while mixing. (Sorry, but I forgot which it ingredient this thought pertained to was).

AquaCleanse + UV = No root rot. You cant have beneficial microbes, but who cares (in hydroponics). Buy the gallon jug of AquaCleanse for 25$ and dilute it in an unused container. Lasts for a while and very cost effective.

why do magnesium and phosphate precipitate as magnesium phosphate . similar to calcium sulfate would precipitate if we mix solution A and solution B

Very nice video, but I've watched in another video to that EDTA is not very good

Struggled with getting those capacitive sensors working. Now i ordered such scale and will try your method, thanks!