| This is more flow than you are looking for, but I am currently using a 17,000gph propeller pump for my 8,000 indoor pond. I have four 4" bottom drains (2 per settling chamber), and two 4" niche style skimmers. So six 4" drains total. Pump pushes water back to the pond via 6" pipe.
This pump can only handle 3" of head pressure, so the plumbing requirements are very strict. Other submersible pumps do not have that problem, so you should be ok. |