This inline diffuser seamlessly integrates into your existing filter setup, eliminating the need for bulky and often unsightly in-tank diffusers. Designed for compatibility with 12/16mm (internal diameter) tubing, it connects directly to the outflow of your canister filter or other suitable water pump. This placement ensures that the CO2 is dissolved into the water flow before it ente... https://schoolofscape.com.au/products/sos-12-16mm-inline-co2-diffuser