Being the other half of falcon63, I will try to answers your questions. We installed it ourself, the wall was 4" thick, we used 2x4's and 3/4" cabinet grade plywood for the tank to sit on. the rest of the tank is in a bedroom in the house. Our tangs all get along,we will trade in when they are too big. the huma has never nipped at any of our corals. last count my snails and crabs are still alive too. The huma is young and we are fortunate that he hasn't pecked at anything. thanks for your great remarks on our tank.