This Attwood Tsunami T500 Aerator Pump features innovative engineering and a compact design to provide the most reliable aeration in contained spaces such as a livewell. This powerful and reliable T500 model is rated for 500 gallons per hour (gph) output at design voltage 13.6 volts DC, or 450 gph at nominal voltage of 12 volts DC. This pump features the most advanced materials, including premium-quality bearings and state-of-the-art brushes, alloys, and magnets. The patented shaft seal prevents leaks caused by misalignment, and the caulked and tinned wiring eliminates wicking, prevents water damage, and resists corrosion. The motor cartridge locks for secure placement, and unlocks for easy cleaning, maintenance, and replacement. The T500 has a 3/4-inch diameter, 7/8-inch-long inlet, and a threaded 3/4-inch interior diameter outlet. This is a 12-volt pump connected with 29-inch wire with ¾-inch seacock.