Hi, I want to get into the Saltwater tanks. I have been in freshwater for some years now and what to up the stage. But the main thing I am worried about is the water for the tank. I have been researching about saltwater tanks and I see everyone is saying that you will absolutely need one of those RO/DI filters. But I cant afford to get one of those. Some say they you cant use tap water for saltwater tanks but I have been using it in my FW tanks with no problem. I live in NW Indiana and in my neighborhood our water is fantastic imo,but if I use some very good dechlorinator will it fantastic enough for the SW tank? Or can I use store bought water? I know people use store bought water for their SW tanks, so which is good? Just to wrap it up can some one please help me!!!