
The AquaPro CO₂ Test Liquid 15 mL is a pre-mixed indicator solution designed for use with CO₂ drop-checkers in planted aquariums. It provides clear visual feedback on CO₂ concentrations, allowing you to maintain optimal conditions for aquatic plants.
Key Features:
15 mL bottle size – sufficient for multiple uses or frequent checks.
Pre-mixed solution calibrated for 4 dKH carbonate hardness, giving accurate CO₂ level indication.
Simple colour-change indicator:
Blue = too low CO₂ concentration
Green = optimal CO₂ levels
Yellow = CO₂ concentration too high
Ideal for all planted aquariums using a drop-checker monitoring system.
Helps prevent algae outbreaks and promotes strong plant growth by maintaining correct CO₂ levels.
Usage Tips:
Fill your drop-checker with the test liquid according to the manufacturer’s directions and place it in the aquarium near water flow.
Monitor the colour over 12-24 hours and adjust CO₂ bubble rate accordingly.
Replace the test solution every few weeks or after strong colour change to maintain accuracy.
Keep the bottle sealed when not in use and store in a cool, dark place for maximum shelf life.