thanks it is great. the tank has been running for 10 years give or take. we did have an ammonia spike a few years back which caused and algae boom and killed off many of the corals. the larger corals you see were able to tough it out. it has recovered significantly. lots of huge green and red brittle stars too (i know they eat fish).I wouldn't mind that tank in a fish room! lol I am jealous. It looks like your tank has been established for a while due to the sizes of your coral pieces.