They look so much better, and temps are down to around 76*, exhaust fan helpn out tons with the heat, heh captainobvious eh.
pics= Little OG's gettn healthier & the new exhaustplants just lovin the cool temp 75-76.
Also, I'm guessing the whitish res on the rocks are from the nutes? Kinda scared me, my one buddy said not to worry about it, anyone else have concerns?
I would recommend using h2o2 (hydrogen peroxide) immediately. It dissolves into water and oxygen, and sterilizes the tank. I've had problems with rot before, and I've found that keeping a cold, lightproof, well insulated reservoir with a touch of h2o2 will all but guarantee a healthy, sterile root zone.