CO2 Indicator Solution Refill

This is a refill for our CO2 Indicator Kit product

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Q: What is CO2 Indicator Solution used for?

A: CO2 Indicator Solution is used inside a drop checker or CO2 indicator to visually monitor CO2 levels in your planted aquarium.

Q: How does the solution work?

A: The solution changes colour based on the amount of dissolved CO2 in the aquarium water, giving you an easy visual guide to adjust your CO2 system.

Q: What do the colours mean?

A: In most setups, blue indicates low CO2, green indicates an ideal range, and yellow suggests CO2 may be too high.

Q: Why is monitoring CO2 important?

A: Proper CO2 levels help aquatic plants grow faster and healthier while reducing the risk of stressing fish or shrimp from excessive CO2.

Q: Is this suitable for all planted aquariums?

A: Yes, it is suitable for nano tanks, aquascapes, and larger planted aquariums using injected CO2 systems.

Q: How do I use the indicator solution?

A: Add the recommended amount of solution to your drop checker or CO2 indicator, then place it inside the aquarium according to the device instructions.

Q: How long does it take to show a reading?

A: Most drop checkers take around 1–2 hours to reflect changes in aquarium CO2 levels.

Q: How often should I replace the solution?

A: Replacing the solution every 2–4 weeks is commonly recommended for best accuracy and cleanliness.

Q: Can I reuse old solution?

A: It’s best to use fresh solution each time for the most reliable colour readings.

Q: Is it safe for fish and shrimp?

A: Yes, when used correctly inside a drop checker, the solution does not mix directly with aquarium water and is safe for livestock.

Q: Can beginners use this product?

A: Absolutely. It is one of the simplest ways to monitor CO2 safely and effectively.

Q: Do I need this if I already have a bubble counter?

A: Yes, a bubble counter shows CO2 flow rate, while indicator solution helps show the actual CO2 level inside the aquarium.