Scratch all that. My wife had an excellent idea. I can just make two reef tanks. Sell the emperor angel and butterfly. Buy more LR and aquascape it the way I want to. If I slowly remove the bio balls and add more LR this will bring my nitrates down. When the 180 is nitrate free I can move the stinging corals, clams and fish out of the 90 and into the 180 in the living room. The 180 Fowlr turns into a reef and the 90 reef turns into a seahorse tank. Yes!!!