ok thanks for the advise I might just have to try the algae fix. do u know if it will affect my cories or celestial pearl danios?
I don't know about those fish specifically, but if you're worried, you can add an air stone to help oxygenate the water. I believe AlgaeFix affects respiration of animals or somehow affects oxygen dissolution in the tank, so that's why it is toxic to them at higher doses. I'm not 100% sure about that, but I'm pretty sure that's what I've read when I was looking into it. Adding an air stone should help oxygenate the water and keep things safe for the fish, but I don't see why it would have any negative effects on them as long as you stick to the recommended dose.