I have made a few for different boats over the year, i have a 35 g drum... the way I have it set up holds about 15 g with a 1100 gph bilge pump mounted on the back of the transom ...1 1/2" hose running to the drum and a 3" inch drain...keeps thread fin and gizzard shad pretty good , all day , skip jack dont do so well , last maybe an hour.... It does well as a live well for crappie, bluegill....etc