I had great luck with mine! and I don't know about a thousand gallons for this fish... My local fish store owner has had shoal for 12 years and it's only nine inches it's in a 500 with 7 other tangs I think these fish have the capability to be more aggressive kinda like a pit bull a little misunderstood but I would have to agree with everyone else your tank is a little small for these guys your asking for trouble with that many tangs! Best of luck love the current combination tho!