So far I have a 55 gal fresh water tank, I'm using a Rena xP2 for filtration. We have a 10" plecostamus named Frankenstein, 3 small Fruit Tetras, 6 Tbone Rasboras, and 1 Angel.
My kids are the ones who will be picking out the fish, but first they have to research about the compatability of the various choices available in this area.