... do you just mean a tank or set-up in general for sale? Anyways, I don't have any, but I thought I should let you know that you will probably have better luck on Seahorse.org if you are looking for a seahorse set-up. Also, you can't access the For Sale forum on Reef Central until you have 100+ posts and have been a member for... well, I can't remember exactly, but I think it was like 3 months. But once you qualify, that would be a good place to look for used tanks and other equipment. Good luck.