I have been growing in a DWC for 3 years in a 2.5’ x 4’ 7x closet. I have learned a TON and definitely have greatly improved the final product. I quickly learned that I could only grow one plant at a time. I tried 3 then 2 and then 1. The yield and quality I got from just growing one, was much, much better than crowding more plants. I tend to mainline my plant to maximize the size/coverage/yield. My average yield is @ 8 OZ of top-shelf - I don’t get much LARF any longer and throw that in for bubble hash. I have had as high as a LB with a Maui Wowi strain from ILTGM.
I have made modifications to the orignal set up along the way. The biggest difference-maker for me was changing lights. The pricing for lights have really gone down, you can get some serious power for your bucks.
My setup is very simple: 8-gallon HDX tote from Home Depot, cut a 3" circle for the cup. . Drilled 4 - 1/4" holes for the tubing for the air stones. I invested in a high power air pump which makes more noise than the aqua pump, but the difference in the plants is AMAZING! Rolling bubbles all day long makes the girl very happy.
I purchased a good PH/Temp Meter as I was going through them every few months. I have had this one for over a year and love it - well worth the investment.
I also significantly upgraded my water cooler. Biggest difference-maker yet. I have pulled it out of the closet which has helped stabilize my temperatures.
I was using these - I went through 3 of them.
I now use this:
Keep the water at a nice chilled 68 degrees F.
I am a big fan of Dutch Masters’s entire nutrients line. I used a bunch of others that have come and gone, these guys are steady and consistent.
I love DWC as it is set and manage. I check the PH daily but rarely have to do anything to adjust it. I have to add water and nutes on a weekly basis which is pretty dang easy.
The one downside that I see is the noise. I have a closet in a closet! I hear the air pump even though the closet has been noise reduced. It would be nice to have a silent system, but hey - you can’t have everything.