It is. Just rigged right now. Ha. Algae is already dying back 10 fold vs the fluval 88 ceramic diffuser.
HA! RIP ALGAE. idk why, but I always get a kick out of watching algae die; I feel so triumphant and victorious . I'm weird lol
Yes. Can be anywhere in the outtake line. Glass Inline CO2 Atomizer Diffuser System for Aquarium Planted Tank (13mm for 12/16mm (1/2'' ID) Hose) Amazon.com : Glass Inline CO2 Atomizer Diffuser System for Aquarium Planted Tank (13mm for 12/16mm (1/2'' ID) Hose) : Pet Supplies
You turn off filter, cut output and tubing with sharp scussors. Then, insert this just like you would insert a control valve into airline tubing, then connect your Co2.