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VIV Crystal Glass Clip CO2 Checker
- CO2 checkers are an elegant addition to your planted aquarium.
- Especially for pressurized CO2 system plant tanks.
- Used to test and monitor the concentration of the aquarium water plant fish tank.
- No suction cups are required.
- Simply hang it on the edge of your planted aquarium.
CO2 checkers allow you to monitor the CO2 level inside your aquarium. Handmade from the highest quality borosilicate glass.