ive got a 75 gallon freshwater tank with a sun sun canister filter and I would like to turn it into a saltwater fowlr setup for now, may turn it into a reef tank down the road but for now I don’t want to spend the money on a light. I know I’m going to need to get some live sand and live rock but what should I do about filteration? The sun sun probably wouldn’t be good for saltwater so should I just load the tank full of live rock or get a hang on back skimmer? I don’t want to add a sump because I don’t want to drill my tank and I don’t like the hang on over flows