I've never used canisters, only AquaClear HoB
's, but I have a question for all the canister folks out there: do you ever have issues with water aeration? I ask because it seems to me one of the nice benefits of an HoB
is that the filter outflow also churns up the water some, which helps oxygen transport. Since a canister doesn't do this, is it "necessary" to use an airstone to oxygenate the water? Or is that simply a non issue?