Clscea Inline CO2 Diffuser for Planted Aquariums, DC400-L-16, 16/22 mm Hose, Bubble Counter

Clscea’s aluminum alloy external inline CO2 diffuser atomizes CO2 for planted aquariums and fits 16/22 mm filter hose with a 16 mm (0.63 in) inner diameter.

• External inline installation — keeps the diffuser outside the aquarium and leaves tank space clear.
• 100% open-flow design — does not limit filter flow.
• 16/22 mm hose fit — matches the stated hose size and inner diameter.
• Transparent viewing window — lets you see the diffuser operating.
• Bubble counter with a built-in check-valve pad — counts bubbles and helps prevent water backflow without an additional check valve.

For planted aquariums using a canister filter, this diffuser adds CO2 without placing a diffuser inside the tank. Its inline format keeps equipment outside the aquarium, while the visible window lets you observe its operation. The design is intended for aquarium owners who want CO2 diffusion integrated with their filter setup.

How does the Clscea inline diffuser connect to a filter?

The diffuser connects inline with a filter and supports either horizontal or vertical connection. Choose the direction that suits your hose arrangement; the unit must be used with a filter. Its external placement keeps the diffuser out of the aquarium.

• Connection orientation: horizontal or vertical.
• Required setup: use with a filter.
• Product version: DC400-L-16.

How does this diffuser handle CO2?

Clscea’s diffuser uses a design intended to dissolve CO2 more efficiently and save CO2 compared with in-tank CO2 diffusers. The transparent window provides a view of the diffuser’s operation, and the included bubble counter lets you observe bubbles as CO2 passes through the setup.

• Included accessory: bubble counter.
• Built-in check-valve pad is in the bubble counter.

Can the diffuser disk be cleaned or replaced?

Yes, the diffuser disk can be removed for cleaning or replacement. This lets you access the disk without replacing the whole inline unit when it needs attention. The diffuser is made from aluminum alloy, and the disk is a serviceable component.

• Removable disk: clean it when needed.
• Replacement option: the disk can be replaced.

This Clscea diffuser suits planted-aquarium keepers with a compatible canister-filter hose who want an external CO2 setup and a visible bubble counter. Its inline connection, serviceable diffuser disk and built-in check-valve pad make it a fit for filter-based CO2 diffusion rather than use as a standalone in-tank diffuser.