I want to set up a salt water tank as a test i want nothing in it but the fish i want to start with somthing stupid like a bait fish and if i can do it ill move to a big tank 300+ and get some bigger fish of that sort the main question is for such a tank do i need more then just lights and a filter to keep water clean ? Is it neccesery to get a skimmer? Could it work with just a canister filter and maybe some power heads ? Temp and a kept out ill get a chiller just worried about water chemistry a d whats needed