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.
- 5 ml Indicator solution
- easy to read by white background
Height - 37 mm
Diameter - 20 mm
What's in the Box ?
1 x UP Aqua Co2 Checker Solution