Seachem Glass CO2 In-Line Pollen Diffuser

Seachem Glass CO2 In-Line Pollen Diffuser

Seachem's Glass In-Line Pollen Diffuser mounts directly on the output hose of a canister filter, dissolving CO2 into the high-pressure water stream for maximum dissolution efficiency. By injecting CO2 into the filter's return flow, the in-line diffuser achieves near-100% CO2 dissolution — far more efficient than traditional suction-cup diffusers that work against water surface agitation. The result is higher CO2 levels with lower gas consumption, keeping your tank CO2-saturated with less waste. Compatible with standard 13mm and 17mm hose connections used on most canister filters. Available in two fitting sizes:

• 13mm — Fits 13mm (1/2") canister filter return hoses (e.g., Eheim 2213, Fluval 106/206)
• 17mm — Fits 17mm (5/8") canister filter return hoses (e.g., Eheim 2217, Fluval 306/406, large canisters)