Inline CO2 Diffuser for Planted Aquariums, Side-Mounted Ceramic Disc in Three Tubing Sizes

This inline CO2 diffuser delivers pressurized CO2 through canister filter outflow tubing, keeping equipment outside your planted aquarium and reducing visible in-tank clutter. Fine diffusion supports clean, even distribution while leaving the aquascape more open.

A side-mounted ceramic disc reduces disruption to filter flow and stays accessible for routine cleaning or replacement. Three sizes cover common tubing setups, making it easier to select the appropriate connection for your external canister filter.

Key Features

• Moves CO2 diffusion outside the aquarium through the canister filter outflow line, reducing visible equipment inside the tank.
• Produces fine CO2 diffusion and even distribution for a consistent planted-aquarium CO2 routine.
• Positions the ceramic disc at the side to reduce flow disruption and make cleaning or replacement straightforward.
• Offers three common sizes for compatibility across a range of canister filter tubing setups.
• Uses durable PC material in the side-mounted ceramic disc for long-term use, and a replacement disc is available separately.

Specifications

• Brand: Ultum Nature Systems
• System compatibility: Pressurized CO2 systems and external canister filters
• Installation: Inline on canister filter outflow tubing
• 12mm (1/2") size: Fits 12/16mm tubing
• 16mm (5/8") size: Fits 16/22mm tubing
• 20mm (1") size: Fits 20/25mm tubing
• Disc position: Side-mounted
• Disc material: PC material
• Maintenance: Periodic ceramic-disc cleaning or replacement
• Replacement part: Ceramic disc available separately

Match the diffuser size to your canister filter tubing, install it on the outflow line, and clean or replace the ceramic disc periodically to maintain consistent diffusion.