Can you guys help me out in identifying the algae that I am fighting with? It's been popping up no my hardscape and on my carpeting and slower growing plants (Anubias, buces, S. Repens etc.) And also on most leaves that are slightly shaded. Have my CO2 cranked up as high as I safely can with my fish and have been dosing EI with double the PO4 since I was also having GSA issues. Can't seem to beat this one though. Let me know if you know what it is! I am thinking BBA but am not positive. Thanks in advance!