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Kratky vs DWC – What’s the difference – Aeration vs No Aeration
Easy DIY D.W.C. Aeroponic Hybrid Hydroponic Setup under $30
quick update
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Peter Grant
This might be the best video you ever uploaded!
The timelapse alone is worth watching and your presentation of the results and the explanation are very good!
btw: I Think i can see air-roots on the Kratky plants (the stuff that looks like mold :D)
Dave yes. That’s correct. What looks like mold is the small capillaries. the roots have increased their surface area to breath. They are also great for nutrient absorption like what I notice in my planted fish tank, but the fish like to pick at the fuzziness and end up ruining them. Interestingly, I don’t see much of that “fuzz” in Dwc even above the water level.
I think the DWC plants dont need the air roots because there is plenty of oxygen in the water.
Where do I buy those square containers you use?
His containers are cat litter containers painted black. He mentioned that in the basil video.
Pete I absolutely love those. we have 6 cats so they are a gardening dream
BTW I saw a recirculating DWC kit on Amazon no less made of the same buckets lol.
It’s really interesting that the plants anticipated the lighting cycle and moved around in response!
Thank you for doing these experiments, amazing timelapse. Every video I’ve seen of yours has been very informative and helpful. Appreciate all your work, keep it up! Can’t wait for all your future videos.
These experiments are great! I’m someone who likes to test everything, so your videos are super helpful! I was wondering if you could post a little more about your setup & equipment – lights (looks like Roleandro but not sure if it’s the 300 or 600 panel), grow room, timers, pumps, aerators, etc? Your plants seem to do great and I’d love to learn more. Thanks!
Mann, love the thought you put behind this video.
Thanks for the video and your observation on how things are different with the air stone and where the placement is a bunch of the root mass when they’re both in the same containment
That time lapse is ridiculously soothing! I’ve watched it about 5 times! Plants dance! So cool!
That was an awesome time lapse man. Thanks for sharing that, and your comparison.
It’s so cool to see something in a different time – like we could never see in “real life”/real time. It really does show you things you could probably never notice otherwise.
The way the plants moved, in circles, during the lights out phase – and how the began to anticipate the coming darkness or searching for light, change in environment or whatever exactly they’re doing is fascinating.
Why didn’t you notice all the fungus growing in the kratky one?
Pikudo Pikao there is no fungus. Those are air roots and the white on the plastic net cups is mineral deposit.
Pikudo Pikao at what point in the video please? I’ve watched several times, Is it really small? I would think its hard to mistake air roots, and I’m kinda curious cause I’ve never tried dwc without what looks like now, an extreme amount of aeration lol
Looked like fungus after you said it. the power of suggestion…
Actually roots in both buckets have some sort of micro-organisms growing on them. Look into brown slime problem with hydroponics. You can’t really expect to submerge living roots in water and expect them to not have micro-organisms growing on them. Aerating your water wont save you, you’ll just get harmful aerobic bacteria on there. Cooling the water aint gonna work either. You can either add pool shock, or beneficial bacteria to the water. Adding beneficial bacteria is costly, it can also clog your lines and air stones. Google how to make a solution of pool shock and water for hydroponic plants. This method is extremely cheap and keeps your water practically sterile and does not cause harm to your plants at all. You would basically be doing the same thing the government does to all the city water in america, and that has proven to be very safe for humans and very toxic for micro-organisms. If your roots are not totally white like snow, its caused by some sort of micro-organism. Trust me I let that stuff grow on my roots for years and had no clue it was something that could easily be ridden of. Happy hydro
@colbys100 you can also add pondzym to water solution to add beneficial bacteria to eliminate root rot.
Awesome video!! That time lapse was amazing- very nicely done! – BTW, My SWAG is that the “movement” at night is the plants growing…
And REALLY nice to see some solid methodology employed in the testing.
Also you have really nice production values and the explanation was thorough, well thought out and well presented.
A+!
Great video! I appreciate people like you who go through the time and trouble to do these experiments and then publish them. Thanks.
this is really well-made content. direct and to-the-point, but also very clearly demonstrates and explains the important points.
Amazing! Excellent content! I just ordered my first rig. I know I’m late in the year to start for peppers but I just find all this fascinating. I will definitely be aerating!
I love how you controlled the experiment. I have seen many side by side videos but they always introduce extra variables. Well done.
No-nonsense. Awesome video. I love how seriously you take the science. Thanks for taking your time for this
“the science” is all it is about
Amazing presentation, great experiment, and I love the time lapse, especially the plants dancing when the lights go out 🙂
I work at a place that sells hydroponic supplies and you explained to me in 6 minutes what I have not understood in almost 2 years of working there! Thank you! Also, it was a joy to watch the plants dance as they did. I had no idea they did this! I knew they followed the sunlight, but didn’t realized they moved in such a beautiful way, especially in synthetic light. What a treat to witness that!
Wow! I never realized that plants moved like they did in your time lapse! I loved it!
Fascinating, loved the time lapse video. Great watching how the plants move. Thankyou, really enjoyed watching, and great experiment.
I’ve used Kratky for one season and it was amazing for leafy greens. A key component was ensuring that the water level was even with the bottom of the net cups at the start. The roots were astounding, tearing the net cups apart in some cases. I believe that is why your Kratky plant did so poorly. I suggest trying the experiment again after making this adjustment.
but how does that explain the massive growth compared to the plant that did reach the (unaerated waterline)?
@Brett Perry It doesn’t really, it’s just two separate experiments with very different results.
I was wondering if there was another explanation because I have watched several videos on YT with completely opposite results. In most cases roots are definitely more, but the plant itself grew bigger. I’m not an expert, so I was sitting here scratching my head trying to figure out why his experiment didn’t work like the others.
@Brett Perry It is explained on the video…
Excellent video and the results match my experiments. Aeration makes a huge difference and thanks to this video I now have a better understanding of why.