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

This CO2 diffuser is intended for planted freshwater aquariums of up to about 100 litres, where the keeper needs a discreet way to dissolve CO2 and wants to route the line along the glass or around the aquascape. Its long, adjustable tube lets you fit the installation to the tank's layout rather than to a fixed diffuser shape.

Why it matters

• According to the manufacturer, the membrane is made of ceramic fibres with densely packed micro-channels, which is stated to produce very fine CO2 bubbles.
• The tube is approx. 40 cm long and can be cut to length or bent, for example at the rim of the tank, to suit glass thickness and the arrangement of equipment.
• The acrylic body is fully transparent and, as described by the manufacturer, more impact-resistant than glass, so the diffuser remains inconspicuous inside the tank.
• The 12 mm membrane diameter is compact, which leaves more room for plants around the diffuser.

Specifications

• Intended for: aquariums up to approx. 100 litres
• Membrane diameter: 12 mm
• Total length: approx. 40 cm (can be trimmed or bent)
• Material: high-strength acrylic
• Connection: standard CO2 hose, 4/6 mm
• Membrane colour: white
• Included: 2 suction cups and extra tube segments for practising bending
• Weight: 1 kg

What it works with

The diffuser suits compact planted aquariums of up to about 100 litres that run a CO2 supply through a standard 4/6 mm hose. The 12 mm membrane is matched to smaller tanks, and the extra tube segments included in the set allow the bending to be practised before final installation.