I wouldnt use that pump for an aquarium. Waterfall pumps are very high torque motors, so they can pump large volumes of water very very high, so there for they are very inefficient. That pump probably uses atleast twice the amount of power as a standard 1800 or 2400 pondmaster.
Tank: 55g FW
w/2 hot mag filters (w/d in the future)...scored tank, cab, hood, filters for $150
Fish: Cal Ryukin, R&W Ryukin, Baby Champion Panda, R&W Ranchu, Cal Ranchu, 2 Tamasaba, Pearscale, Lionhead, Black Moore, Pleco