High quality Inline Advanced Precision CO2 Bubble Counter With Magnifying Holder.

• 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.
• Durable magnifying holder to allow for attachment to the side of your tank or cabinet.
• Plastic cap for CO2 tube attachment.
• 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
• Drop Checker
• Diffuser
• Check valve