Word, I hear ya but your saying to fill the reservoir up even though there are no roots in the water? I was under the impression that the water in the reservoir and bubbles was only helping when the roots were in the water.I have an experiement dwc plant just as you're growing. This is my very first grow. I'm using organic soil along with FF nutes and gen hydro nutes for the dwc. When I first started off, I didn't know wtf I was doing but after reading and getting guidance, my plant is thriving. You might be underwatering or overwatering....but I don't think that's either of your problem. That air pump you have in the pic.....how many outlets does it have? I'm using a 2 outlet walmart special airpump for just a 3 gal bucket, single site. I honestly think you aren't getting enough oxygen/bubble action to your plants. Even when my dwc plant was jacked up, it was still about 8 inches in 3 weeks....and bro it was pretty fucked up. If you don't have any root growth coming out the bottom of the rockwool, you need to have your water level in your res pretty high. Bubble action is what you're looking for when the plants are that young. I top fed mine about every 3 days and it was fine...sometimes 4 or 5 days. Once you see roots coming out of the net pots, you can then lower you water level. The roots will grow and reach for that water. I think you might of started nutes a little late as well. Give them a small dose of your grow nutes and see how they react. ALSO...if you're using Fox Farm soil nutes STOP. Some dude told me I could use them and that's what fucked my plant up. Get hydro nutes. Gen hydroponics is what I went with. Cheap and easy. That dwc plant is now almost 2 ft tall and is looking great. HOPEFULLY I didn't stress her out too much and she doesn't go hermie on me. She is a fem White Widow! Good luck bro and I hope my newbie experience helps you out in some way.
Thats exactly the problem if the plant still needs the water under it without any roots being in it.
Does anyone else agree I need a full resevoir for this thing to work even though there arent any roots in the water?