JBL ProFlora CO2 Count Safe 2

Bubble counter with reverse flow stop.

Main Features:
• To adjust the CO2 level: Bubble counter with backflow off for accurate dosing of the CO2 supply in the aquarium.
• Fill the bubble meter with water, connect it with a hose to the CO2 system and diffuser, then secure it to the outside of the aquarium using two suction cups on the glass or two screws on the furniture.
• Easy bubble check: CO2 bubbles are visible and countable, and no backflow thanks to check valve, for all common CO2 systems.
• Reliable hose screw connection prevents accidental loosening of hoses.