Hi Triffid. I run the C02 directly into my intake pipes of my aquaclear
filter with no problems at all! Usually some C02 will be lost with the
tumultuous way the water is put back into the tank whether it's a waterfall
effect or a power head. Even with that downfall I usually get around 25 to
30ppm of C02 consistantly with DIY.

Dave.

"Triffid Farmer" wrote in message
...
I've set up a Yeast CO-2 system and have been toying with different ways
of
diffusing the gas into the tank.
Last night I hooked the CO-2 line directly into the inlet of my canister
filter.
I was going to set up a powerhead and airstone as per a couple of websites
but thought that the canister filter method would do a better job.

It seems to totally pulverise the bubbles into the water and still run
silently.
I can't see any gas bubbles coming out the submerged filter spray bar so
I'm
assuming that it's totally dilluting the gas.
As the filter is a totally closed system I also can't see anyway that the
gas could not be injected into the water.

Has anyone tried this method and or am I barking up the wrong tree?