I don't know how much a pump costs, so I really don't know. I'm sure I could afford to fix it "right," but I'm a thrifty SOB. It's plumbed for one, and the tubes go into some weird mini garbage disposal type deal in the aft part of the hull. The fish boxes aren't really big, and I'd guesstimate around 15-20 gallons a piece, so it doesn't really need to be that powerful.