| | Re: inline atomizer on canister intake?
Never let air get sucked into the canister filter. The pump needs the water to cool it.
Inline CO2 diffusers are more proficient than the in-tank ones because they are finer and the bubbles have time to dissolve in the hoses.
I use a GLC very close to the canister filter. The bubbles have 4 feet to dissolve and I get a little vapor like mist in the aquarium. If I turn down the CO2 a hair then I get no bubbles in the tank. I have it turned up to combat the BBA.
Search for the utube videos.
2-3 bubbles per second is considered good.