To get better help you should post more information: Size of system, how long it has been running, chemical parameters (eg, nitrate, phosphate, alk, etc), livestock, feeding schedule, what you dose if anything, full picture of tank.
I have a Red Sea Nano Max Penislua (100 liter). I have the Tank for aprox 1 year. I have 2 clowfish and multiple Zoanthus and 2 anemons. All are fine. The parameters are: