Mixer L CO₂ Reactor – CO₂ reactor

This CO2 reactor is for aquarists who run CO2 through an external filter and want the gas dissolved into the outflow with little loss. It is rated for aquariums up to 250 L and is installed on the filter's return pipe, so it replaces a standard outlet fitting.

Why it matters

• Ceramic fibre diffuser: CO2 is released through a high-grade ceramic fibre diffuser mounted on the outlet pipe, which the manufacturer states gives the best dissolution rate in this design.
• Swirl outlet: the round end cap sets the water into a rotating flow, which the manufacturer says increases CO2 solubility and reduces gas loss.
• Compact, transparent body: the small dimensions and clear construction keep the outlet unobtrusive in the tank.
• Replaceable diffuser: the diffuser can be swapped separately; the manufacturer recommends replacement after about 2 years of use. The NEO Diffuser Tiny is sold as a spare.

Specifications

• Symbol: NEO MIXER L
• EAN: 8809702871091
• Maximum aquarium volume: 250 L
• Diffuser material: ceramic fibre
• Weight: 0.05 kg
• Hose compatibility: 16/22
• Elbow outer diameter: 19 mm
• Elbow inner diameter: 15 mm

What it works with

The reactor is designed for the NEO FLOW L outlet from Aquario and is listed as compatible with filters from SunSun, Oase, Aquael, BOYU, Tetra, Eheim and JBL. Measure your return pipe with calipers before ordering, since the elbow fits the 19 mm outer and 15 mm inner dimensions. It can be combined with the NEO Skimmer, which is sold separately.