I just began my 1st ever DWC grow, only a couple of plants for now. I put them inside my tent (80x80x180cm) a couple of days ago, just under two weeks after they sprouted. And the roots immediately began turning black/brown. The water temp is high (25-26°C) and that's the only thing I can think of? I've brought some hydroguard to see if that helps but only time will tell. I attached a picture but it's hard to get a good shot.
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