I have seen some post where someone has said they put the co2 out line into a powerhead intake and let it spray bubbles into the tank...Is this a better method than just running the co2 into my canister filter intake? Could I have co2 run into my canister as well as some going into a powerhead? I never see any bubbles coming out of my canister, but the water level always drops down inside it after a while. oh yeah I use diy co2....for now