Hi, I have been trying to figure out a way to filter (3 to 5) 40 gallon totes using one 55 gallon barrel. i just purchased a calpump pwm5200 for my outdoor pond. so i now have my old pump (cant remember the brand but im pretty sure it is a 900 gph) for this application. anyone have a better way of doing this with what i have? Thank you for any help/