Hey all, I had a question about a new tank I have. I just bought a used 220 that was prefiously used as a reef tank. It had really bad calcified algae all ofer it and when I cleaned it all up I found there are permanant marks left my the algae. Theyre might be a way to get them off but I have tried everthing, except soap. A razor would not even take off the marks. Please let me know if this ahs happened to anyone. The marks are somewaht transparent but still noticeable.
Tahnks,
Tyler
