How many GPH does it take to properly run the Keene header box and the A52 Sluice? I have set up a recirculating power sluice and I would like to know what size pump I should use? I know 2000gph isn't enough and  a 1.5 hp is too much... I am thinking 3000, but I only want to buy it once and I want it to run on my little generator. I have found a 1/3 hp 3000 gph dirty sump pump that I think is perfect it'll run on my generator for sure but will it push enough water? What do yall think?