try looking for a local club, aquabid works as well, also craigslist works. i don't get why the fishstores wont buy from you. it makes no sense. but anyways, i was wondering how exactly you filtered all these tanks. is there a giant wet dry filter somewhere. or like a huge giant canister filter. i see one canister in a pic. but that can't be it.
If you look real close to the pics of the room tanks there are some what appears to be sponge filters in the back corners. Hard to tell if that's all.