I have a 30 gallon Oceanic that I am going to start. I have to T5 HO fixtures, maxi jet 1200 PH and a Prizm skimmer. Not going to use a canister filter or the HOB Marineland that I have. Also, the tank used to be a freshwater tank that has been treated for Ich using copper sulfate, will this still pose a problem for a saltwater tank even after it is flushed out and clean? I've heard it can embed itself in the silicone and kill inverts and some fish. I plan on using strictly RO water from the start and making this a FOWLR tank and a killer cleanup crew, a sump will follow later down the road. Any thoughts would be great, thanks a million....