The AquaLabs Pro Inline CO₂ Diffuser delivers ultra-efficient CO₂ dissolution directly into your aquarium's water flow — without a single bubble entering the tank. Designed for planted aquarium enthusiasts who demand clean aesthetics and maximum CO₂ uptake, the Pro model features an upgraded diffusion chamber and precision-engineered internals for superior performance over standard inline diffusers. Simply cut the outlet hose of your external canister filter and secure the unit in place. Available in 12/16mm and 16/22mm to suit a wide range of canister filter setups. Key Features Discreet inline CO₂ diffuser for clean, uncluttered aquarium displays Installs directly into the outlet hose of external canister filters Ultra-efficient CO₂ dissolution — no bubbles enter the aquarium Pro-grade diffusion chamber for improved CO₂ absorption vs standard models Keeps CO₂ equipment out of the aquarium for a natural aquascape appearance Easy installation — cut and secure filter tubing, no tools required Available in 12/16mm and 16/22mm to suit most canister filter setups Designed for lower maintenance compared to internal diffusers Durable construction for long-term reliability Ideal for CO₂-injected planted aquariums and aquascapes