Thank you all, great info. Rev as far as custom or manufactured, whichever I can get for the best price, and meets my needs. So if I get it brand new I assume it will be manufactured. If I can find a used one that is close to the size I'm looking for, it doesn't matter to me. Someone above commented that sca was changing their design and getting rid of the center overflow box, which makes me interested in them. Need to save money where I can, as it's not overly abundant. I'll need to get two more kessil 360s, probably two mp40s. Annnd if my girlfriend will get on board with my plan, at least one will need to be wireless. Not to mention oversized skimmer, I mean I don't need to tell you guys. Just know I'll be upgrading from a 30 gallon ha.