I want to know how much you guys would pay for the following: 220 gal Perfecto tank 5 yrs old, with (4) 1.5 in bulkheads and (4) 3/4 in bulkheads. No stand or anything else just tank. The tank it self seems to be structurally good and the seals are fine, but it was used as a saltwater tank and has that multi-colored growth which all saltwater tanks have everywhere. ( I think it is called Coralline Algae). If you could give your opinions on how much you would pay for it I would greatly appreciate it. Also how would you go about getting that multi-colored algae and calcium build up off? I have tried using vinegar on my 135 gal but I could never get it all of. Thank you guys very much.