Bubble counter With backflow stop.
• To adjust the CO2Level: bubble counterWith backflow stop for the exact dosing of the CO2 supply in the aquarium.
• Fill bubble counterWithWater, connectWith hose to CO2 system and diffuser, fix outside the aquariumWith 2 suction cups on theglass or 2 screws on the furniture.
• Easy bubble check: CO2 bubbles are visible and countable, no backflow thanks to check valve, for all common CO2 systems.
• Reliable hose screw connection prevents accidentalLoosening of the hoses.