Aquarium CO₂ Regulator

The Blue Zone Aquarium CO₂ Regulator is a single-stage unit built for planted aquariums. It connects securely to standard CO₂ cylinders and delivers stable output for diffusers, bubble counters, or splitters. We’ve used these regulators extensively in our plant nursery, where they’ve handled daily operation without issues.

This regulator is built from solid metal components and requires a wrench to tighten onto the cylinder, ensuring a secure, leak-free connection. It includes a standard M10 threaded outlet and a hose barb fitting, allowing you to connect CO₂ tubing directly or thread on accessories such as bubble counters, inline bubble counters, or an M10 CO₂ splitter.

Features & Benefits

• Single-stage regulator for planted aquariums

• Standard M10 threaded outlet plus hose barb fitting for direct tubing connection

• Works with threaded bubble counters, inline bubble counters, or M10 CO₂ splitters

• Solid metal construction built for long-term use

• Requires wrench tightening when attaching to CO₂ cylinders

• Compatible with standard CO₂ tanks

• Proven in our own nursery under continuous operation