My live well has a 1200 gallon per hour pump running through a 50 gallon live well that overflows through an out flow. I mounted a 1200 gallon blidge pump which is used for getting water out of you boat. When you put i on the back it pumps into the live well. you need one of these pumps because the ones the boat comes with dont pump enough. The water flows out through the side of the boat threw a threw hull fitting.