Diffuser Original Extend S white – 12mm CO₂ diffuser for aquariums

This CO2 diffuser suits keepers of aquariums of about 50–150 l who want to dose CO2 through a fine ceramic membrane and keep the equipment visually unobtrusive. Its small 12 mm membrane and clear acrylic body reduce the impact on the tank's layout compared with bulkier models.

Why it matters

• The ceramic membrane releases CO2 as fine bubbles, which dissolve more readily in water.
• The acrylic body is transparent and far less fragile than glass, so it is less likely to crack during handling or cleaning.
• The long tube can be warmed gently, for example with a lighter, and bent into a loop that sits over the aquarium rim, so no additional fittings are needed.
• The compact 12 mm size leaves more room for plants and simplifies placing other equipment in the tank.

Specifications

• Recommended aquarium volume: approx. 50–150 l
• Membrane diameter: 12 mm
• Total height: approx. 38 cm (can be shortened and bent)
• Material: acrylic and ceramic
• Hose connection: standard 6 mm (4/6)
• Included: 2 suction cups, extra tube sections for practicing bending

What it works with

The diffuser is designed for CO2 systems in planted aquariums in the approx. 50–150 l range, where it can be mounted with the included suction cups or routed over the rim after bending. It connects to standard 6 mm (4/6) CO2 tubing, so it fits typical aquarium CO2 setups that use this hose size.