what do you have for filtration? You're going to need extremely good filtration..it's a sweet tank!!!lol so I have heard..My fiance found this aquarium with stand, canister filter and a lot of accessories for $150 at a yard sale...I haven't seen a hex shaped aquarium like this one in a long time..I have it cycling now..i used water from a water change in my 10 gal tank to get it started..I just need to get a new air pump..The one that came with it won't push air once the stone gets past halfway down in the tank.