DWC Hydroponic VS Kratky Non-Circulating Hydroponic - Which Grows Lettuce Faster?
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- เผยแพร่เมื่อ 29 ก.ย. 2024
- Follow me on Instagram @Khang Starr
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Hydroponics
DWC
Deep Water Culture
Kratky Hydroponic
Non-Circulating Hydroponics
I’m shocked! I thought the kratky wouldn’t grow nearly as fast as the one with the air circulation water system. Thank you for stopping me from wasting time and money on pumps and electricity
Dwc is a good method to grow something very nutrient and oxygen hungry. Idk whether you could get away with kratky on long living photoperiod cannabis for ex. But seems to be doing great for the quick cycle plants like lettuce!
@@MB-qj9vl I think you are right. I think this maybe has something to do with CO2 and access to nutrients. This is only a guess, but I think agitating the water might release CO2 from it, making it more difficult for the plant to access it when needed (imbalance between O2 and CO2). The bubbles will most likely also reduce the root’s surface area contact to the water, making access to the minerals in the water more difficult.
A larger plant like a tomato will need more oxygen, and might create a CO2 and O2 imbalance the other way in the water (too much CO2 and not enough O2) in the water, making the water stale.
I am also very surprised by this. I was planning to get some pumps. Now, I guess I can save some money
wow me too
@@Lemonz1989 when you bubble, you're not adding pure oxygen. CO2 is also introduced. In fact, the added CO2 can make your pH swing.
I believe the DWC should maintain high water level, with floating raft being the extreme. Advantage is many different age plants in the same system.
Also, the air flow may lower water temperature and possibly react with some forms of nutrient to change pH or availability of difficult nutrients like iron.
excellent video! Blowing all preconceptions out of the WATER.... haha.. So air pump causing more oxygen and circulation is not a guarantee to a better crop, at least on lettuce. I am going to be trying cherry tomatoes on kratky, it was a real pleasure to see you had the exact same nutrient that I have ordered - Arogarden - that's the only one I found that's one simple container to measure and pour in.
Also, one could do with less height on the container with Kratky, as it hasn't used that height, roots are not even 1/2 way down, so thats an eye opener when deciding what container to use.
You have clarified so many things for me that I can't even list them all! Very impressive video. Just what I was looking for!
The top roots are called air roots. Too much bubbles can cause the water roots to slow but in longer grow time plants dwc will catch up and surpass. Lettuce grows in short spans especially indoor and hydroponically so they do well in kratky, low maintenance setups. I run my pumps at the same time as my lights and my 5 gallon bucket dwc is growing basil, tomato and watermelon 2-5 times faster than my soil comparisons.
Your narration is incredible 👏
how many hours of light do u recommend per day?
The roots look yummy
Thank you for another informative video brotha. I am new to hydro and tried to do the same experiment with my lemon tree seedlings. I started two months ago and my seedlings haven't died, but there has been no growth all. Do you have any idea why they are so stagnant?
Great video. Thanks for sharing. I’ve made up my mind thanks to you!
DWC makes more efficient roots.
DWC needs more nutes because the roots can take it.
Is the water flow in the system running continuously? Could you let me know if there are working hours?
how frequent u need to refill the vaporized water?
Do you top off with regular water or nutrients water?
Great video! Thanks!
Thanks bro, great video!!!
Can ginger or turmeric be grown this way?
hi
which nutrients is the best ?
thanks
I have been following you for a while. You do good stuff. I have planted peppers because I watch your videos. Hopefully one day I get to try and grow your pepper seed in Canada 🇨🇦.
How long a day do you keep the air pomp and the light on?
10 hrs per day, 7 days a week.
@@KhangStarr thanks for answering. Then we can safely stop the air pomp half day ?
👍🏾👍🏾👍🏾thanks
Jackson James Anderson Joseph Young Jessica
Your excuse for the dwc is lame the purpose of the pump is for the better growth apparently it's not working the doctor was right with his method plain and clear stop making excuses I'm using the kraki method
Your channel is really really useful and so well done. No nonsense- you just get to the point and your experiments are really thorough. I'm trying hydro for the first time ever, after decades of soil growing. I'm not getting around so well after cancer surgery and this seems like a great gardening option for folks with limited mobility, like seniors. Thanks for the inspiration!
Thank you for showing us this comparison. I'm starting out with Kratky and am happy to know it works as well, if not better than, DWC. I'd love to see a comparison on fruiting vegetables as well!
more videos show kratky being worse then videos that show it being equal.
Great experiment. On the Kratky lettuce, it appears that the 3 plants in the 5 gallon bucket produced more than 3 times the amount of lettuce than the single plant in the 1 gallon container. Please confirm if this is the case. If it were the distance from the light, I would expect the 1 gallon lettuce to look leggy which it did not. What would cause this since in both cases, there were plenty of nutrients/water left. I look forward to hearing your response. Thank you.
Is this comparison also in 55 F temperature? I watched the earlier salad culture comparison. At temperature of 55 F there is probably no benefit in terms of mechanical aeration, I'm thinking. Reasoning logically, I would guess, that you would begin to see benefit from mechanical aeration only past 70 F / 20 C degrees water temp.
Your test produced some interesting results. Its amazing how the roots adapt to the different environments. The results of this test give us a better understanding of the plants oxygen needs and how it develops to achieve survival. I very much appreciated this comparative test on video.
Great experiment, since root size with Kratky can depend on container size and the amount of nutrient drop, using 5 plants in a 5-gallon bucket might create competitive growth and nutrient use that would make bigger lettuce heads.
Great video. I’ve a question. How often do you change the solution on both systems ? I mean How often do you add the nutrients ?
for the duration of this 30 days, I didn't change or add anything.
What temp. Is the grow tent kept at for the lettuce. Great experiment. I love those kratky roots. Almost like a birds nest. Take care. Thanks for videos.
Great experiment ya done here. Kratky works super well no doubt. Lettuce is easy to grow so not much needed for them. Would like to see this same experiment done with tomato plants.
Check out Tikki O’s channel. She has videos on tomato plants using Kratky method.
I have a question. I have hydroponic systems and I'm wondering if the pump stops working, won't they still work, only now as a Kratky system without a pump?
Hi Khang. I have been enjoying ur videos for a few years now. Thank you once again for all ur informative videos. As for this experiment, my opinion from my experience is the dwc using rockwool and peat pellet is that they are so saturated with splashing water that make the lettuce plant struggles at the seedling/young stage. Once the water level from the container drop enough to not get saturated by the splashing water, the plant will start to thrive. And i also think there is a relation with the water consumption from each type of plant. Lets say dwc bok choy vs dwc lettuce. Bok choy intakes more water than lettuce so it does not matter that the rockwool or peat pellet is wet from splashing water. Now as for dwc lettuce vs kratky lettuce...they all touch the water at the beginning thus they all get saturated. Then...wich one will have a dry rockwool/peat pellet first as water drop? I am no expert. I just want to share u my experience as i once had to ask myself why my kratky lettuce grows better than my dwc in a 30 days frame. U should try dwc lettuce in only clay pebbles without rockwool.
Great experiment! Try weighting the produce!
Hi Mr. Khang, i'd like to know by any chance did you conduct the weight comparison between the 2 experiments.?
More informative video indeed. Keep it up!
I think it’s a flawed experiment if you didn’t test and adjust ph. In both videos you thought that the air stone root disturbance limited plant growth in DWC, but what if it just so happened that the Kratky buckets had more ideal ph for nutrient uptake? I’m just curious myself and thanks for listening
I'm not altogether surprised, since roots are not normally subjected to aeration or continuous disturbance. interesting experiment, though.
Trying hydroponics for the first time this week and this has been super helpful. Thank you
Kratky, what an amazing method!
Excellent experiment! I grow Kratky and was thinking of experimenting with DWC. But you covered it. Thank you.
Unless your doing it from a cloned plant your results won't be correct. These plants are the same strain but diggerent phenotypes. Cloning will solve that and give u a true reading
That's interesting. Every other DWC vs. Kratky had the DWC growing faster and the root systems always much denser.
Can you check the pH value of both systems? May explain the color difference.
I'm an expert in DWC with 35 years experience, can someone tell me what Kratky is in a few words? I don't have the time to watch this guys slow role.
I greatly appreciate your testing things, the results were amazing and unexpected !
This answers my earlier question to you on why my the roots of my cherry tomato cutting keep dropping off and rotting. I cut some of the roots off and changed to the kratky method and it began growing roots and leaves again!
are you from philipines? i know somebody who make flashlight videos with a very similar accent.
Did you keep these under the grow light continuously and at only 20%.? Thanks your video is very helpful.
I can tell by the sound of planes major metro probably tampa area maybe st pete fl. Also oscillation sound of air density southern us maybe Georgia probably florida
Did you keep your lights on full power? how many hours ON/OFF?
Kratky is wonderful until you have plants that fruit. That is where oxygenation helps!
Häää??? You have to fill up the dwc constantly, otherwise it is a Kratky with airibubbler :)
I’m thinking the kratky method has less algae because the oxygen depleated water is a hostile environment unless you can grow air roots like the lettuce…
Thank you for posting! Personally I like the Kratky method, less work and just easier in general. Thank you
Air injection in DWC will cool the water by evaporation and perhaps slow growth.
Is there a difference in ph and or how the water smells or looks after some time spent in the buckets
More Time, effort and expense, to get minimal to no better results? Not for me. Kratky just makes sense.
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Hi Khang, can you re-use the water after the cycle? I noticed that there's plenty of water left after the 32 days. Water is a precious commodity in Cali so it would be nice if it can be re-used, maybe just add the right amount of nutrient and additional water?
Absolutely, but perhaps not again in hydroponic. I reuse hydroponic water in soil containers and if watering is sparse or in a plant that requires infrequent watering then the algae that may have grown dies. If you have no algae growth in your used hydro water then it could be reused for any soil watering.
I would like to see an experiment where there is intermittent airflow; running five minutes every hour, or 15 min every 3 hours
nice experiment just discovered kranky method and this really shows viability
Great video, could you tell me where to get the small 1 gallon, black jars? Thank you for the videos.
Great experiment…I wonder if some plants would do better with kracky and others do better with the air pump. Maybe some plants need more oxygen to the roots than others. I’m thinking about trying this with other plants. Baby bok choi? Green onions, or kale?
"Expert" is a relative term! 😁 leadership changes with perspective
Very interesting experiment. I thought for sure DWC would win by a long shot in both the big and small buckets. And how interesting that the Kratky method had greener leaves! What?!? Now if I can only get my stupid Kratky to work properly...my plants are always dying or on the verge of death. I even bought the special amber half gallon bottles for them to block out light! Ugh. LOL
How long do you have your plants going before they start to die? I didn't realize that after you refill/top off a kratky container 2-3x you want to dump out the nutrients water mix and put new water in. If you continually top them off, over time the plant will pull the nutrients it wants and leave the stuff it doesn't use behind, so the mix will get more and more diluted/weaker/lacking in nutrients if you are only adding a small amount of new mix to the old stuff. If your plants are dying right off the bat your light may be too intense (they will get tall and skinny if it's too weak).
@@jooooohn401 They pretty much don't thrive at all. I've changed out the water totally once a month, oft times, the water is still pretty full. I probably need to start pH'ing and all that jazz.
You can wrap containers in tin foil ad a cheap and effective option. It's not actually touching any food just the container so use the cheap brand.
Excellent video! Thanks for your effort on this experiment.
Thanks for making this great video, well done experiment, love the side by side comparisons!
Why is the light so far from the lettuce? It looks like you are losing almost all of the light.
Are those 2 inch holes? And what hole saw do i need to create those holes?? Thank you!
the air will make the ph swing high. that locks out nutes. ph that down you have a big difference.
Taylor Deborah Wilson Sarah Garcia Elizabeth
Question. Can I use any medium to cover the top of the rock wool? Such as Perlite or other pebbles instead of the hydroton?
I know this is a old comment but yet, it's just about giving the plant something to hold its weight. Like if you put a 20 foot pole sticking 1 inch in the ground then it would fall over but if you stuck it a few feet in the ground then it would be fine, this principal is called growing medium.
Did you do a nutrient top up or monitor pH/ec/ppm during their growth? What were your findings?
I do!
Thank you for doing this, this is a great low-cost method of hydroponics that I am absolutely going to do myself.
OUr water is so hard we always use filtered or distilled when growing plants or in any machines we use water in. I.E. steam mop, humidifier, kuerig.
Great experiment, thanks for sharing with us.
you are showing they grow at the same rate, but roots are different.
Did you add more water or fertilizer during the grow?
Great side-by-side experiment! Did you have a warming mat in your grow tent?
Nope, no warming mat.
I will recommend you to keep doing more research on this topic !!
What's your grow light distance? I have a 200w LED grow light, and I noticed my kratky lettuce is starting to wilt. Plants are about 24 inches from the light and aren't even directly under the center.
I have used the aero garden solution as well. Their 3 pod system is actually less then a gallon and I have the 6 pod system that is close to a gallon and on the bottle of the aero garden it suggests 2 teaspoons for the 6 pod one gallon system with that Same metrics it would appear that 10 teaspoons would be good for for the 5 gallon system however many recommend using much less with new plants but I’ve never had a problem when I used the full solution on young plants in the aero garden. I thank you for the demonstration, I love the large bucket would be super good for some large plants. If your plants are growing well with much less fertilizer solution, I might cut back on the fertilizer a little as well.
Expected results. Nature is always best.
Thanks for the video. I'm trying to decern the difference between the two growing methods? Maybe I'm missing something, but both involve a bucket of nutrient laden water. Is it just the airpump?
I wonder if you time it,
Keep the air stone off untill 10-15 days
Once it reach 10 or 15 days turn the bubbler on for the rest of the days
Cause it looks like dwc was slow to start
But finished a little stronger
is DWC supposed to have the air pump going 24/7? I think that is the usual way right?
but what if you put the air pump on a timer so it only runs like 5 times a day for a half hour or an hour, would that be Kratky or DWC or a hybrid method?
I was really surprised at how much electricity the air pumps use, and they get hot
I think by putting it on a timer you would save a lot of electricity and end up with far less heat and extend the life of the air pump
but then of course a small fountain pump would be better to aerate the water , it uses a lot less electricity and is much quieter and runs cooler.
I wonder just how much O2 the plants really pull from the water in a DWC system
and if running the air pump 24/7 is just overkill , I wonder if anyone has ever done any experiments as to just how short of a time you can run the air pump with DWC without it decreasing the amount of O2 the plant gets.
The difference in the roots is super interesting. Explains a lot.
Everytime you mention disturbance I think about Star Wars and the Force 😊
Kratky = root rot root rot root rot....
Mix seeds with sand!!!!
So good Equipment, no air in/out, no clue what to do 😵
What an informative video. Thanks a lot. I think maybe there is algae on the small dwc due to the size of the leaves and their transparency. Since they are smaller than the kratky ones, and much lighter, there is more chance for the light to pass through down the container.
HI. I think what happens in the DWC, wrt to the Algae.
Just a thought.
When the air bubbles pop on the surface, the slight explosion happening, causes tiny amounts of mist to rise into the air, and the supplied lighting is able to refract along the mist, and assist in the growth of algae. I hope this means something. Just a thought. Thanks. Graham from South Africa
I wonder what exactly, the 5 gallon buckets are best suited for? I would prefer the fill it and leave it method. I would LOVE to know that answer.
Love from india ❤... Great 🙏🏻
A great experiment indeed💚👏
Congratulations po..
Happy planting. Happy growing
More blessings to come😇
Great looking . Can you tell me if you ever get aphids or small black winged insects an if so what can I do to get rid of them.
Also I don't want to use anything that is dangerous to eat.
I look forward to hearing from you. Thanks
Thank you so much for this demo. Very well done. I learnt something very important to air pumping vs still water with Kratky. Also its still cheaper to do kratky, saving electricity. It would be interesting to compare taste because the more green (healthier) the better taste.
A very cool experiment. I'll always add an airstone though, especially for longer growing plants.
Khang Starr, contact Space-X, they need you for their Mars project asap! No martian-soil problem to figure out!
Stir made plants could not sleep well
Thank you this was very informative I'm considering this because I've had a double lung transplant and I can no longer mess with soil
I have to say I am so happy I found your channel a little while ago. It/you have helped me so much with things I just didn't know, being I am pretty much a rookie at gardening/growing veggies. I am hopeing you or anyone can help me with this. You made a comment you will have lettuce for quite a while, well I don't seem to have much time with my lettuce after cutting down. It goes very limp almost soft looses the crunchyness in 2-3 days. Is there a reason for that maybe I'm doing something wrong possibly?? Thank you in advance for any help you can give me.