Chihiros CO2 Glass Checker Indicator Aquarium Accessories [ Hanging Type ]

Product Description:

Monitor your CO2 concentration in planted tanks with the help of the glass CO2 indicator. Our set includes a piece of glass CO2 indicator only. If you need a bottle of CO2 indicator reagent liquid (without mixing aquarium water), please purchase separately by choosing the option.

Blue – insufficient CO2
Green – sufficient CO2
Yellow – excessive CO2

Dimension : 6cm L x 3.5cm W
Material : Glass