View Full Version : how big of a pump for a 10 or 20 gallon sump

michael fruth
07/10/2007, 10:06 PM
hi i just wanted to build a sump and what type of pump for either a 10 or 20 gallon sump. thanks:rollface:

07/10/2007, 11:31 PM
The size of the sump doesnt matter,the question is how big is your tank but the more important question is how much water can your overflow return to your sump.

michael fruth
07/11/2007, 08:03 AM
my tank is a 75 gallon

07/11/2007, 08:32 AM
I would disagree that the size of the sump doent matter. I would say it matters as much or more than the display size. The same amount of water goes through both. A would give a different recommendation for a 75G display with a 10G sump and one with a 50G sump. With a 10G sump, keep it very small, like 100 - 150 GPH. With a 20G sump, maybe 250 - 350 GPH.

07/11/2007, 08:35 AM
I had a 20g sump with a 54g and used a mag 9.5.

07/11/2007, 08:40 AM
The actual flow from a Mag9.5 is highly dependent on the plumbing setup.