Hello i'm completely new to salt water someone would like to sell me a 55 gallon aquarium with everything I need including all the live rock for 500 dollars and they are even going to set up the tank for me. The fish in that aquarium are a Yellow tang, Another type of tang a clown fish and two fish that I don't know the names. I don't plan on adding any other fish and I was wondering how hard it would be to maintain the aquarium. I figured who better to ask then the saltwater experts that arent trying to sell me something.