I'm looking for an ID on this algae in one of my tanks. It's been in the tank a while (6 months or so) all over the rockwork, dark and lit areas. I've been making sure my nitrate and phosphate are low (~5ppm Salifert and ~0.05 ppm Hanna ULR respectively) and stable for months. So far, this has not helped and in fact has seemed to have little to no effect. I also tried brushing off as much as possible with a toothbrush while keeping nitrate and phosphate low, and it came back strong within a few weeks. Anyone seen this stuff before?
Other parameters: Alk ~9 dkH, Calcium ~ 430 ppm, Mag ~ 1360 ppm, pH stable ~ 8.3, salinity ~ 35 ppt
Other parameters: Alk ~9 dkH, Calcium ~ 430 ppm, Mag ~ 1360 ppm, pH stable ~ 8.3, salinity ~ 35 ppt