kush wrote:
: If you can't use a powerhead, you can try snaking the end of the diffuser
: line into the intake tube of your canister filter, or whatever. The CO2
: will be entirely resorbed into the water by the time it comes out the
: outflow tube. This method will, however, make a few filters (i.e., mine)
: rattle.

Any idea if the same sort of scheme would work for an over-the-back power
filter? I sort of doubt it, but am not experienced with CO2 systems.
Maybe introducing the CO2 under the filter media would work?

cheers,
-david