Yoooo duuuuuude!!! I combined your method with a wicking bucket method to keep my indies lit boieee!!! You the OG Professor son. Everyone bow to the real real here!!!!!!!

An honor to finally find you Dr. Kratky! Hope to see a lot more outstanding and priceless videos from you. By the way, thanks to Jeb Gardener and Matt Garver for their videos to know and reach Dr. Kratky.

Years later,,, Great video with great info for starters. Thx 😊❤️

Dr Krathy thanks for the great video. Most interesting. I will try to make your self watering system. Would make things a lot easier. I would just like to say thank you for your work. Thanks to you and a few others I am growing loads of peppers using your method, producing lots of peppers and having loads of fun. Thanks

Great to bring back the old ways that so many people seem to forget. In 1960's my great grandmother and Grandmother grew stuff in a similar way just not as fancy set up. Many old timers had various plants growing in containers half way in some nutrient water of some type. I think most of them lived through the great depression and general method dates back to at least 1920's probably much older than that even. Great Grandmother and Grandmother grew normal gardens, but also grew over winter indoors, some stuff in pots of dirt and other stuff in just solution.

You'll discover the wisdom of the float valve if you try adding the nutrient solution my hand. Growing tomato plants really suck down the solution. You'll be adding it daily, then twice daily...just use the float valve. Really enjoy these videos from the person who developed the process.

Thank you for the extremely valuable information. There is soo much potential for these systems.

Wow , so glad i found this site of Hawaii .. real innovative way of future Agriculture will def.changed .. Great Experiment for public around the world l. Thank you again

I'm very happy that i found you Dr. Kratky. I didn't know you have a youtube channel! Your approach to hydroponics is amazing and really helpful!

Beautiful peppers! Great video, I really enjoyed it.

Thank you for your help mister Kratky

Thanks Dr Kratky! Your video inspires me to ditch the soil and go Kratky! Thanks and Shout out to Jeb Gardener for pointing us to Dr Kratky.

This video. I'm going to refer to it from the gardening site my wife and I run.

Very informative, thank you

Thanks for sharing such a informative knowledge. Do you grow outside on a pllet covered with polythene or a green house.

Another great video... thanks for sharing and leading the charge! You mentioned the nutrient strength method could be improved, however I think the buffer of old solution in each growing tray helps average things out. After mixing in the replacement nutrient in the supply reservoir, I think the reading above 2.0 isn't an issue. The stronger solution would be diluted once it trickled down to each growing tray, as the solution in each tray is probably closer to the initial 0.95 you measured? The only way to be hyper-accurate would be to either completely purge & refill, or close the loop by recirculating... and both methods add complexity. I like the simple solutions. :-) Thanks again!

I love your voice and delivery

LOVE your videos Dr. Kratky! 2 questions: 1.) What is the duration of time from entrance of net cups into solution tanks to crop yield? 2.) Can I grow indoors in the winter WITHOUT a grow light - for example - near a window? Thank you so much for all of your scientific and educational videos! You are a pioneer and amazing farmer!

G’Day Dr Kratky, I’m from hot n humid Mackay, Queensland. I’m excited to have found you through Jebs channel. 👋 I’ve previously always been growing in soil, in large containers and beds, I love vegetable gardening, but this limited me to only growing in the dry season as all my tomatoes got fungal issues in the humid heat and heavy rain. My stressed egg plants attracted spider mites and I always gave up at the end of spring, if I couldn’t grow my beloved tomatoes. So my gardening was basically limited from April 25 Autumn thru November 17 late spring, our dry season locally. I’m going to try doing some cherry tomatoes this wet season (summer) with your method, but placing my tomatoes under hard cover where they hopefully won’t get as stressed from being frequently rained on. I’m looking forward to home grown salad ingredients this summer. Now to find lettuce that doesn’t bolt in the heat. 🥴😂. Aloha n thank you for being. 😂❤️

Dr kratky .found this very useful for me as a start-up.am from india and am planning to grow cherry tomatoes in an acre if land under grren shed net house.am pleased with using the same method as you said above.please let me know if the yield is going to be affected during summer as our temprtrs outside the greenhouse may vary from 40 to 45 degrees.thank you

Thank you for posting this video. You have done an excellent job of describing and showing the process that you use in your personal greenhouse! I like how you have built this simple system for growing all kinds of crops without electricity for pumps or aeration. I am using both your float valve system, and also your fill-and-forget system from the university cucumber grow in a 32 gallon trash can. Both methods work wonderfully, and I am most appreciative of your knowledge sharing. Thanks!

Honestly, it was I was thinking about kratky metod , to have level after the roots are taking all nutrient solution, so we make a hole , for leveling with a pompe and tubing, in the not bottom of tank , a little more up . So it s working perfectly 👌 I see . Good job , and tank you .

What is the optimal water level to have float set at? Is it the 2" above base of container?

Wow really informational video wish I could attend some of your classes

can i use insulation foam instead of polystyrene?

what level u maintains always in tank?

Thank you for your videos! Can you please tell me the volume in L of the black plastic trays you use? Thanks very much.

hydroponic humor. ha ha. root angioplasty. love it!

Did I read that right ? 1 pound per gallon nutreints?

hi Dr... I love your videos... do you have a video explaining how many gallons of water needed for the 500ml stock A and stock B?

thank you Dr. Kratky! will try it this winter. Can you please advise papers to read to learn more about oxygen intake with this method, as water level seems to stay on the same level. I understand mesh is essential to stimulate air root growth. thank you

Great video, I have seen people who like the masterblend 4-18-38 for lettus and tomato, is it simmilar or better then what you use? Also if I can not get either brand locally what can I get to make my own 4-4-18-38 blend or what you recomended?

a large pond/swamp is across the street from me. do I need to be concerned about mosquito growth in my bins, or can I use the dunk tablets in the water? thanks

I was wondering. In the first part of the video you were concerned about the mosquitoes, you continually drop the reservoir and allowed the plants to take up the nutrient solution, but I did not see roots extending into the nutrient solution. By the way, can the roots penetrate the screen? Should you not wait to see root growth into the solution before the the solution level is allowed to drop? And how far below the pot would that final level be?

Hello thanks for all! My question is how do you deal with hot summer temperatures outside? Is it making a problem, what are the max plants can handle as tomatoes for instance?

I am currently attempting to grow using your method on a much larger scale. My containers are 300 gallons when completely full. Based off these calculations it would take roughly 5.5 liters of fertalizer per container. These numbers seem so large, but then again the amount of water is significantly increased. Is there anything else that I should consider when increasing to significantly larger growing tanks? I was gifted 30 of these 300 gallon food grade containers, and many 55 gallon food grade drums. Thank you, J.Ashley

What if I wanted to grow my tomatoes in a container without the float valve or the steady nutrient solution? I have been wanting to grow tomatoes by using the Kratky Method. Would it be possible to grow them in just one container until harvest. I know tomatoes drink a lot of water so would a 60 gallon tank be sufficient enough for the tomato plants entire life?

Amazing video Dr.Kratky! I was wondering while using an float valve system, the nutrient level in the container will remain constant. But, what about the pH level and TDS level inside the container? Will it remain constant? Also, will this method require replacing the nutrient solution from the container from time to time? Looking forward for many such inspirational videos. Thank you!

Good morning Dr. Kratky, I wanted to ask how often should you change the nutrient solution your growing from totes/buckets that do not incorporate a float valve.

I am an absolute beginner and use GHE Floraserie. The mix of nutriment is different for the growing time and the blooming and fruit one. How are you managing these two different moments? Also I read that the plants use more water than nutrients, this means that the concentration of the nutrient should grow in the container. Thank you for your advice

Great videos! I might be tried but why are you removing the boards under the sump to drop the level in the tank? Is removing the boards required? Thank you!

Is it best to use an EC, TDS or PPM meter?

May I ask about the nutrition solution tank. If I have only 1 gallon Nutrition solution tank how much stock solution A and B will I incorporate ? I have plans to start in 1 experiment plant on my porch . Not a farmer really 👨‍👩‍👧

Hey Dr. Kratky - for those little spaghetti tubes, are you using any fittings at all or are you relying on the mechanical properties of the tubing itself to seal the hole in the container? If so, that's marvelous!

Awesome! just a quick Q: Is it just me or is your nutrient solution very low in nitrogen? If so, why? If not, where does the nitrogen come from? Is it solution B?

Are you concerned that as the tomatoes uptake and transpire water that the nutrient solution will become more concentrated? Then instead of adding pure water you are adding more nutrient solution which will make it more concentrated. I am new to this, I am not criticizing. Some videos suggest adding either 1/2 to 1 times the original volume in pure water. Once that volume has been reached they completely drain out the existing solution and replace it with new nutrient solution. Also is this kinda of like a DWC method because you don't allow the water level to drop? You still maintain it at the bottom of the net pot? Do you feel that aeration would make it better?

So the tomato plant has enough stability because it's trellised and because of the roots in the screen? Mine always seem too heavy and flop over, so... Am I right in my assumption of stability?

Why they do much better than store bought?

I accidentally mixed the Masterblend *5X too strong!!* My tomatoes and cucumbers sat in the mixture for over two weeks, and never looked stressed. Obviously I fixed it when I realized my mistake, but it makes me wonder how important the amounts are. I've also been told that mixing in a specific order is important..... Masterblend first, followed by Epson salts & then Calcium ....but I question that as well.

does this method works in outdoor environment under the hot sun?

Man! That seems like a lot of work. I'm thinking keeping a close (daily) eye on the solution level makes more sense.

I had great success but weather changed and changed again so my first attempt did not come out

I have a question that I hope you can answer: Can a plant grow indefinitely like this? Or will it eventually stop producing and/or die? I've been learning all I can about this method to try and grow food for my family. The plants would be indoors, so growing indefinitely would be ideal. If not, then oh well. It's unavoidable :)

Dr. Kratky, the nutrient concentrations you show here and in some of your other videos are 200x greater than directed per the chem grow instructions. Did you mean 1 lb per one hundred gallons of chem grow? Thanks!

Is there an easier way to do this for those of us with limited space? I live in a condo so cement blocks won't work for me.

I really want to try all this but so many wires and containers and equipments and chemicals freaks me out. 😶

Greetings from Ghana in West Africa. Are there any opportunities for short practical training of trainers from Africa. I'm dreaming of setting up an advanced hydroponics training centre in Ghana. Can you assist with training

i like you man

Aloha

I did but it has been hijacked

time stamp 4:40 mentions " now the solution is lowered and will remain there for the rest of the crop???

You could use mosquito dunks in your tanks instead of the screens, to kill mosquito larvae.

✌️Everyone, don’t bother watch this video. Hydroponic kratky method is supposed to be super easy, not all these complicated things. If you need better advice, check out other videos.