Product name：CO2 LONG TERM MONITOR
CO2 LONG TERM MONITOR can constantly monitor the CO2 level in water plant aquariums. The CO2 level should be tested continually to ensure an optimum living environment for aquatic plants.
1. Add 5 drops of CO2 test solution on test vial.
2. Refill aquarium water to the water level line.
3. Fit the bottom stand with the test vial tightly and rotate it up side down of the figures.
4. Put CO2-LONG TERMMONITOR inside the aquarium, approximately 10cm below the water surface.