CO2 Drop Checker/Monitor

Co2 Monitor, Drop Checker Kit

This CO2 monitor kit can help you dial in the correct amount of CO2 in your aquarium.

Green means your Co2 level is just right
Blue means your CO2 level is too low
Yellow means your CO2 level is too high

Comes with:
1x Glass Drop Checker
1x Suction Cup
1x 15ml Test Solution