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• Fast response time
• Use to measure CO2 levels at-a-glance
• CO2 regent included

TOP AQUA Long Term CO2 Glass Monitor planted for aquariums are small enough to appear unobtrusive, yet large enough to provide a clear and accurate CO2 reading.

CO2 Checkers are used for long-term monitoring of the CO2 levels in the aquarium. A CO2 reagent is filled into those CO2 Drop Checkers and will change the color according to the amount of dissolved CO2 in the aquarium water. Green will indicate a proper CO2 value, yellow will indicate to much CO2 and blue will show not enough CO2.

It is hand-crafted using only the highest quality, laboratory-grade, borosilicate glass for maximum strength, durability, and visual clarity.