I am new to this site and I am desperately looking for some help. I have some kind of algae that I can not get rid of. At first I thought water changes would help but after two months of 25% water changes I found out that my water was to clean and that I should try and raise my phosphates and nitrates. I still can not get my phosphates up but have raised nitrates to 4. No luck with algae so I was instructed to black out tank for 48 hours and then treat with peroxide. No luck, it is slowly coming back. The algae grows in very long single strands across my crushed coral bed. If I leave it go it spreads quickly. Thanks to anyone who offers help.

