But the water isn't flowing around the motor, right? Basically the
bottom of the canister filter gets hot, meaning it's transferring heat
to the air, not the water. But probably some of the heat gets
transferred to the water.

Ben in DC

George Patterson wrote:
Benjamin Slade wrote:


I wonder if the pump in this type of canister filter is water cooled,
or air cooled?


I have one of these that I use for tank cleanup. The motor is a sealed
unit at the bottom of the filter. The impeller is magnetic drive. It'll
put about as much heat into the water as any cannister filter of a
similar size.

George Patterson
Why do men's hearts beat faster, knees get weak, throats become dry,
and they think irrationally when a woman wears leather clothing?
Because she smells like a new truck.