Can you tell us a little bit more about your tank?
How long has it been setup?
Did you set it up with live rock, dry rock or a combination of the two?
What type of filtration are you using?
What is your lighting?
What are your water parameters, specifically:
- Salinity
- Temperature
- Ammonia
- Nitrites
- Nitrates
- Alkalinity
- pH
I'm also moving this thread to a more appropriate forum where it will be more responses.