Ok this is my first grow with dwc and I've been growing it about 2 months now. ok my set up as of now is a 18 gallon res, gh trio nut, gh ph up and down, two air pumps 5v each, 4 air stones. Ph is always between 5.5 and 6.1, water temp is around 68-72, I even add in h2o2 to be safe. Now the issues I've been having is I get this white gel on the roots and bottom of the net cup and on the bubble stones. About 3 weeks in I first got it and did a h2o2 bath and cleaned everything then put everything back. It was good for about 2 weeks then it came back. Now no matter what I do I can't seem to get it to go away. I've read about a micro tea I could use but not sure any help would be awesome. I only have one picture of what it looks like right now but can post more.