Co2 test 15ML

Characteristic:

- Liquid for refilling the CO2 glass indicator.

- Just add 15 drops of liquid to the glass indicator to assess the CO2 concentration level in the aquarium. Blue - too little CO2, green - optimal CO2 level 30mg / l (ppm) Yellow - too high CO2 concentration. We recommend using the AQUA NOVA indicator for the best results.