OMG that was just too much, There's nothing wrong with starting a FOWLR and then putting corals in the tank down the road, Now if you're talking about a Predator tank then it would be difficult to do. My tank will be a Reef system but first I will start with Fowlr. I'm not gonna sell my kids or my Grankids for Corals or equipment. I have an LED light and a good skimmer, Powerheads and even have a wish list that includes Tunze Pumps, Apex controller and Dosing pumps. But at the moment I can't afford all that stuff, So I'll stock my tank with the fish I want first then in time when I can afford it make the switch to Reef tank. My wife fully supports me and with out her I probably would of sold it by now. I have a plan, I know what i want in the tank and it includes fish, not alot but a select few. It will be LPS dominated and it's gonna be stunning.