I have been struggling with the dreaded black beard algae!! It was every where; rocks, substrate, decorations, plants, and even had a few pest snails with it on their shells. I found a product called apt fix (can be found on 2hr aquarists website). At first I bought the little bottle and it worked!! I would turn the filter off, dose about 8-9 pipette fulls on areas with bba. This stuff worked so great I bought the bigger bottle (highly suggest the bigger bottle if you have a big tank). I have been spot treating with every water change and my days off. It has completely eradicated my algae! It even seems to work on brown spot algae. I just thought I would share in case anyone else is looking for a cure to the algaes.
