- Made with unique formula assures accurate CO2 level.
- Use only 1cc each time, and recommend to change solution each month.
- No need to add aquarium water.
- No need to change solution after water changing.
- Injecting 1cc of CO2 indicator solution to the cap of CO2 indicator.
- Adding aquarium water is not necessary.
- Recommended period of solution change, once a month.
- Solution change at every water change is not necessary.