find out whats causing it. how old is the tank, what is your stock list, how often and how much do you feed and what type of lighting and filtration do you have. also what are your pramitors?
You'll need to post more details about your system and what the problem is. Lighting, size of tank, how often do you feed, what type of water RO? those kinda things....Jim
yeah post up perimeters. How often and at what percent do you do water changes? what lighting? tank depth? If you have corals in there I would try to get that problem resolved quick.