Ejoyous CO2 Hanging Bubble Counter with Check Valve Double Head Non-Return Bubble Counter for Aquarium Water Plant, Fish Tool for Co2 Diffuser Atomizer Regulator Injection System

【Built-in Check Valve】: This bubble counter comes with a built-in check valve; The CO2 Regulator can prevent the backflow when the pressure changes and this can avoid the water plant table and CO2 bottle from damage

【Essential Tool For Aquarium】: It can count the volume of carbon dioxide and supply the plants with enough carbon dioxide. Clear and bubble formation allows you to count bubbles with ease

【Easy To Install And Use】: Single head bubble counter connect to regulating valve directly; Double head bubble counter connect to air pipes at both end; Good choice to make your fish different

【Premium Quality】: This CO2 bubble counter is made of aluminium alloy & acrylic, which is and reliable, and with long service life

【Friendly Service】: We care about your feeling and satisfaction, hope you receive all the best; If there is anything you feel unsatisfied with our hair dryer stand, please Seller at anytime, we are just a mail away : )