Re: Algae bloom (from over fertilization)
Do you have any idea as to how much you overdosed the fertilizer? I'd
suggest you buy an iron test kit (the Red Sea one works well for me & is
not too expensive). I'm pretty sure that Fe concentrations > 0.3 ppm can
be harmful to your fish, so this is probably whats stressing out your
In the meantime, do larger water changes, 10% ones won't be doing a lot
if you overdosed iron 2-3 times what it should be. I'd suggest at least
some 30% water changes, possibly 50%.