Advanced Precision CO2 Plastic Cap XL Bubble Counter-Inline With Magnifying Holder

High quality Inline Advanced Precision CO2 Plastic Bubble Counter XL  Key Features: Clear and precise bubble formation allows you to count bubbles with ease. Built in check valve to prevent damage from water or CO2 liquid flowing back into your regulator. Plastic cap for CO2 tube attachment. Durable suction cups built in to allow for attachment to the side of your tank. Made by Intense, a well known brand for reliable, most efficient and built to last CO2 products. What else do you need to get to supply CO2 to your aquarium? CO2 Tubing & Check Valves Drop Checker Diffuser