Canister filter, how do adjust flow rate?
I just bought a canister filter for my 10 gallon. It's an Eheim 2211 (made for smaller aquariums). It works well (quiet, efficient, etc), but the flow is just a little too strong for my 10 gallon.
What I'm wondering is, how should I adjust the flow? Should I control the flow at the filter intake, or return tube to the aquarium? The filter has valves on both sides and they both slow the flow equally well, I just want to know which is better for the filter. I don't want to stress and burn out the motor.