My some red root floaters seem to be dying. No pump, water at 25c/78f with a heater, a small grow light is keeping them lit during the day. Would tannins from driftwood potentially make them unhappy? - eviltoast

I just did a 50% water change just to see if it seems to slow things down and potentially bring the pH back to normal. The clerk said most people have had bad luck with RRFs except one customer. Now I’m starting to wonder if I’m gonna join the ranks of those who have killed them. Small tank, 4.2 gal/ ~16L