Not sure if this is where to post this but here goes... I have come up on a deal on someone selling their 180g used tank with back center overflow, with stand and canopy, also including an 80g acrylic sump, return pump, and protein skimmer all for $500 does this sound too good to be true? Any advice on what to look for when buying used tanks? I think they just want it out. I did notice the stand does not have a center back brace, seems like it wouldn't be strong enough for the tank when filled even if it is made of oak...