Description:

Aquarium Fish Tank CO2 Bubble Counter Air Check Valve Checker

Usage:

1. Inject 3\/4 water into the bubble counter

2. Connect air check with tube

3. Connect CO2 system and CO2 diffuser

4. Prepare a clock， count the bubble， about 1 bubble per second


Specification:

Material: Glass

Bubble Counter Length: 12cm\/4.7!#!amp!*!quot;

Check Valve Length: 8cm\/3.15!#!amp!*!quot;


Package Incldues:

1 x CO2 Bubble Counter or 1 x Air Check Valve