It depends on how big of tank you want, what kind of seahorses you want to keep, what you plan to do with the tank, etc.
Tell us your plans and we can give you a better idea of what you can expect to spend
Originally Posted by ci11337 http:///forum/post/2495172
Very generally, way more than you expect, although that applies more to reef tanks...
not to sound like an idiot, but is a reef tank simply a tank with a reef ?