wrote in message
news:lALib.33409$La.16168@fed1read02...

I haven't seen a canister filter specifically for aquarium use. I
imagine this is the most expensive route as well. I can immediately
think of one obvious advantage: you have an additional few gallons of
water.


As said by Paul, Canister filters are tremendously popular, and range widely
in price. Do a little research. As far as the your fish liking the bubbles,
keep in mind that surface agitation(like bubbles) deplete C02, which plants
require.