Alright I have a stealth hydro type dwc. Got some Satori (3 weeks old) goin. About a week ago, I noticed some white slime on their roots, I think only the roots that were under water. Well I started a hydrogen peroxide run, following amounts I have seen on this board and others. It didn't help. I even picked off some slime covered root and put it in a bowl of peroxide, just to see if it was something that was immune to it. The shit bubbled and mostly disappeared after about 20 minutes. Just today I snipped off the visibly affected parts and added some more peroxide. I looked a few minutes ago, and happened to see on of my bubble disks had flipped over. 'Well', I think, 'perhaps it is under-aeration that is causing the growth.' As I grab it, I recoil my hand in surprise. The side with the bubbles coming out is covered in slime! Looking closer, there are chunks floating around the res as well. Now isn't hydrogen peroxide and oxygen supposed to kill this stuff? btw, I have my dwc triple-lined with duct tape, have some cardboard cutout's covering the netpots, and I am getting a thermometer tomorrow but am pretty sure that temps are staying more or less in the correct range (65-68 ). Also I have grown like this once before, the only difference being I am using GH nutes this time.