ISTA Solution of CO2 Indicator

• 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.

How to use :

1. Injecting 1cc of CO2 indicator solution to the cap of CO2 indicator. Adding aquarium water is not necessary.
2. Recommended period of solution change, once a month. Solution change at every water change is not necessary.