Ner0zanswered grow question 4 years ago I haven't been testing runoff, the leaves aren't showing and def or toxicity. So you fwfw every 24hrs? Hmm I do weight test them ive been getting 36-48 hours before they're all dried up. I fed them about 3 hours ago a dry girl would have perked up by now. I have had a small algae problem which I just treated with h202 a few days ago but I dont think thats it. Can algae cause problems like this?