11-08-2012, 05:36 PM
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Originally Posted by Jester10
Could I use a canister filter as a "pump" from the sump to back to the aquarium or is this a bad idea?
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A canister filter is designed to siphon water to a lower level them pump it back up. for a net gain of well not much.
A sump pump has to pump the water from the floor to tank about 5' higher. that takes a lot more "power" requiring a design that doesn't leak and so on.
Using a canister filter I think you will find creates lots of micro bubbles as the impeller cavitates and the case has some small air leaks and so on. And basically not pump much water at all.
I think you can almost count on having the buy a pump designed for sumps if you want a sump.