CO2 Regulator Aquarium Dual Gauge With Bubble Counter Check Valve(W21.8) New

Suitable interface: G5/8, W21.8(Optional). The product is a model without a magnet. Perfect CO2 aquarium regulator to create the best growing conditions for your aquarium plants. Feature: 1. This CO2 aquarium regulator can assist your aquatic plants in their growth cycle.

eBay