Hi. I have been in the fresh water fish for two syears and salt water for almost one year. I have a 90 Gal reef tank set up with about 60 lbs live rock and several Tangs and Clown fish and Damsels. Have tried other fish with not much luck and having a difficult time with coral. Mushrooms seeem to do Ok but soft and hard coral seems to burn out. Also now haveing problems with red bristle worms. Someone suggested band coral shrimp to control them but they seem to be growing faster than than the one shrimp can eat. I am thiking of removing some of my live rock and replacing my substrate with live sand to see if it helps and improves my aquascape. I am still learning the hard way by buying and losing my coral or fish. Not gettting much help from my local store. Looking forward to talking to each of you