NEO Mixer M CO2 Reactor for 12/16 mm Hoses

NEO Mixer M is a compact, transparent CO2 reactor that fits on the end of an external filter's outlet pipe.

It suits aquariums up to 250 l. It is designed for the NEO Flow M outlet and for systems with 12/16 mm hoses.

Inside the reactor sits a ceramic-fibre CO2 diffuser. The included round outlet tip sets the water swirling, which helps the CO2 dissolve. The connection elbow is 15 mm outside and 13 mm inside. The internal diffuser is replaceable, and NEO Diffuser Tiny is the spare part.

Measure your outlet pipe before fitting, ideally with a caliper. Replacing the diffuser is recommended after about 2 years. The NEO Skimmer, sold separately, can be combined with the reactor.

The set includes the reactor and a round outlet tip.