Diffuser Special Extend M white – 17mm CO₂ diffuser for aquariums

Diffuser Special Extend M White is a CO2 diffuser for hobbyists running planted aquariums of roughly 150–250 litres who want to dissolve CO2 finely without a bulky diffuser body in the tank. Its 40 cm tube can be shortened or bent to fit the glass thickness and the layout of the aquarium.

Why it matters

• The membrane is made from ceramic fibres rather than standard sintered ceramic, with micro-channels of very small diameter and high density.
• According to the manufacturer, this produces very fine CO2 bubbles, which improves gas dissolution and allows lower CO2 consumption for the same output.
• The 40 cm tube can be cut to length or bent into an elbow along the tank edge, so the installation can be routed without additional fittings.
• The transparent acrylic body is 17 mm in diameter, a smaller footprint than larger diffuser models, leaving more room for plants and less visual presence in the tank.

Specifications

• Intended use: aquariums of approx. 150–250 l
• Membrane diameter: 17 mm
• Total length: approx. 40 cm (can be cut and bent)
• Material: high-strength acrylic
• Connection: standard CO2 hose, 4/6 mm
• Membrane colour: White

What it works with

The diffuser suits planted freshwater aquariums in the 150–250 litre range, where a compact, discreet CO2 outlet is preferred. It connects to a standard 4/6 mm CO2 hose, so it fits typical CO2 systems used in this tank size. The package includes two suction-cup mounts and extra tube sections for practising bending before fitting the final installation.