Aquapro Single Stage Compact CO2 Regulator

A compact, single-stage CO2 regulator that delivers precise, repeatable bubble-rate control for planted aquariums. Dual gauges, a precision needle valve, a built-in bubble counter and a timer-ready electromagnetic solenoid, supplied as a complete ready-to-run kit.

This version of the Aquapro Compact CO2 Regulator now uses a proven electromagnetic solenoid in place of the earlier motorised unit. Electromagnetic solenoids are the industry standard for CO2 control, with fewer moving parts and dependable on/off performance, so this revision offers improved long-term reliability for you and your customers. Fit, form, and the rest of the kit remain unchanged.

The Aquapro Single Stage Compact CO2 Regulator is a complete, ready-to-run CO2 solution for planted aquariums. It pairs steady, repeatable pressure control with a compact aluminium-alloy body that suits everything from nano tanks to larger planted displays.

Built around a precision needle valve and dual pressure gauges, it gives the user fine control over their bubble rate and a clear read on both cylinder and working pressure. A reliable 12V electromagnetic solenoid handles CO2 on and off, and pairs with any plug-in timer for automated, hands-off dosing that lines up with the tank’s light cycle.

Key features

• Single-stage compact design in a gunmetal aluminium-alloy body, roughly 8 x 10.5cm
• Dual gauges for cylinder and working pressure
• Precision needle valve for accurate, repeatable bubble-rate control
• Integrated bubble counter and check valve, with no extra inline parts required
• Reliable 12V electromagnetic solenoid, timer-ready for automation
• Fits standard CO2 cylinders (W21.8 x 14 / DIN477 / BS341)
• Backed by a 1 year warranty

In the box
Regulator with integrated bubble counter, electromagnetic solenoid, 12V power adapter (NZ/AU plug), a spare O-ring, and a syringe for filling the bubble counter.