I love my RDWC system. Last grow I pulled 9oz from a single Barney’s Farm LSD. My biggest indoor yield to date from a single plant. I only gave her 5 weeks veg time. It’s made me determined to do a 4 plant LSD run this year to get the fabled 2gpw.
The seedlings are a few auto fems that I’ll document in my thread once they get a bit bigger.
netcups and neoprene collars sound good. the rockwool cubes topple over also at a certain point. But I have all here to build several trellis frames. So thats not a problem.
I have ebb and flood tables. I wonder when putting them into an angle I could use them for nutrient film technique. But they have a structure in the bottom so the liquid drains better, i think that would might cause the water to flow in these channels (which might be a problem I guess) instead of uniformingly over the whole area.
I saw you can buy root mats, is that something you use for nft? I saw them on offer in combination with a system like that:
My ebb and flood tables are these here :
They doesn’t look to different I guess. Could I use my tables for nft?
I always added more hydroton balls when I uppotted my plants in the past. It allowed for more support in larger pots (and added base weight). Then again i was a newbie back then and may had done it wrong.
True, you are using a different means of utilizing a flood table. My reservoir was separate and covered and i also didnt have to hide roots further than the top layer of hydroton. Either way, keep up the good work.
You can grow using NFT with no hydroton or anything else - true mediumless. The trick is to start the seedlings in some medium that lets them develop roots that are long enough to reach down to the water.
Ive seen this done mostly where they are doing NFT in 4" to 6" PVC plumbing pipes. The pipes have just a thin layer f water flowing in them, so the roots need to beat least a few inches long. I believe @MicroDoser grows using that technique, but I dont remember how he starts his seedlings. He may be using hydroton in small net pots, but I dont know for sure.
I grow mediumless, but I start my seedlings in small dixie cups filled with perlite - mini-hempy buckets. When they get to maybe a week old, I dump the perlite transfer them to net pots. The stems are just held by the foam pucks.The roots grow into the net pot and support the plant that way once it gets bigger.
I have read of guys starting seeds with no medium, but thats not easy to do. Much easier to start in perlite, or hydroton or rockwool, then transfer to no medium. Its a little stressful on the babies to do that though and takes them a few days to adjust…
This is an air atomized aeroponics setup - the roots get sprayed with very fine droplets - 50 micron on average as a target. Its drain to waste - not circulating. The roots get sprayed, then any water that drips down to the bottom is tossed out.
This is my most recent thread with more build details.
Sort of, but not the way you might be thinking. The roots can grow sideways, or even up in this kind of setup. Its like they dont care about or believe in gravity. They will grow directly toward the sprayers - no matter where you put them - until they cover them up completely. Once the sprayers are blocked, things dont work as well as they should if you are not careful how it is setup.
Yes, just 1" construction foam from Home Depot. I use it for the ceiling/lid of the root chamber. The green disks are just the normal net pot pucks. Not sure if they are neoprine or what, but very soft.
Thats all root. On that grow I screwed up more than once and severely damaged the roots. That plant grew a huge main tap root - about 1.5" in diameter - and thats what you are looking at. The plant to the left grew many very small roots. There is another plant you cant see which grew differently again with several medium sized tap roots in the 1/2" to 3/4" range. All three were the same strain, but reacted very differently to the problems I caused.
The root chamber is 24" in diameter by about 29" tall = around 56 gallons total volume. The roots can fill it all the way if you grow long enough, but these were autos. Here are some more pics at different stages.
LOL Thanks, but actually, if you read the thread you would know how badly I did as far as roots on that grow. I screwed up three times, and left the sprayers OFF for several hours each time. That let the roots dry out really badly and killed off a bunch of roots and stunted growth each time. Fortunately, these plants have an amazing ability to come back from near death experiences I still ended up with a very good yield though by the end.
The new grow is going much smoother with no major screwups so far and the roots are developing nicely.
Those might work just fine. The trick will be if they dry out well between watering and if they hold too much water between. If they stay too wet, the roots will rot. No way to tell unless you try it though. You could probably find some sponge at the local store and just cut it into small cubes for a test, but they may not be the same density or porosity as the ones from ebay.
I looked through your thread and saw that you changed the position of the nozzles. Is that solving the problem of the clogging or just delaying it? In some videos I saw some big hpa setups. Do you know how they prevent the clogging?
I am thinking to build lids for the ebb and flood tables but I am unsure about the material. I think I will try to find hdpe. But the insulation material is easier to get and more lightweight… is the insulation good to keep clean?