Re: why not undergravel

<[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
>
> 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.