CO2 diffusers no longer need to be inside your aquarium! For the first time, CAL AQUA LABS offers a CO2 diffuser that attaches inline to your canister outflow, concealing it from view of your aquarium. Attaching the diffuser inline has a number of benefits:
13 mm Inline CO2 Diffuser
The 13 mm inline diffuser has a 25 mm (1 inch) diameter diffuser disc at the center encased within a glass chamber. The input and output ports connect to 1/2" diameter tubing. Recommended for aquariums up to 55 gallons. Recommended maximum filter flow rate: 600 LPH (160 GPH).