So a colleague of mine saw me looking at saltwater site and he asked if I had a tank. He said a friend of his, who came into some trouble, owes him some money and he is taking, with permission, one of his saltwater tanks. The person seemed well to do and had 5 or 6 large saltwater tanks and even kept some decent sized sharks. He is supposedly going to give me the tank for next to nothing and this includes all the equipment. Here is the catch, the guy I work with is a salesman, so who knows what next to nothing is really going to mean in the end. This friend whose house we are stopping at to look at the fish tank let everything die including all his corals and fish by not maintaining them. Is there anything I won't be able to clean off? What should I be looking at to examine the quality of tank/equipment? Are there any signs that should be a big no, other than cracks? Also, how much of the retail price should I be willing to spend? I'm thinking I'll give him, at most 20% ,and that depends on the equipment. I don't like buying stuff used and I don't like selling things I own as I'd rather just give it to someone who can use it, so unless I get a killer deal it will be hard to take it.