Ista CO2 Bubble Counter 2 In 1 Planted Aquarium

2 In 1 Function - CO2 bubble counter and check valve

With CO2 pipe fasten screw nuts to prevent accidental detachment of CO2 pipe

Spring type check valve stops possible back flow Acrylic material for clear and easy bubble count reading Acid and breakage resistan

Easy disassembling of the cap for filling with water