Having successfully defeated Cyanobacteria, hair algae and staghorn through persistent water changes and adjustments to fertilisers I have a new nemesis.... A pale green/white crust that blooms across the glass and is extremely resistant to scrubbing. At first I thought it might be scale, but as only one tank has it I recon it’s algae. I may have made it more of a problem as I initially quite liked the way it gave texture to my backdrop and I didn’t clean it off. What does it like/dislike? How have you guys treated it in your tanks?
