Use free eheim diffuser or put into Eheim Canister?

Yoemen

In Boogeyman's closet
Nov 2, 2005
765
0
16
Galveston
Ok, my CO2 setup came with a free Eheim Diffuser. Now my question is, should I use it, or should I just put my CO2 through my Eheim Canister.

If I need to run it through my caniser, how exactly do I go about doing that?
 
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