jjb: amazing marine tank. I can only go as large as 20g, and I am extremely envious.
As for my earlier post, I neglected to look at the stocklist, and was thinking about the stupid 500g tank I just set up at the LFS i work at... I think "pond", indoor or outdoor, and I think "pond fish", which is what my ghetto-death filter would work for (goldies, koi, sunfish).
I apologize for making a suggestion without having read the prospective stocklist. That being said, you can still make a bangin' canister filter out of a garbage can and a sufficiently large magnum pump.