Aquarium CO2 Monitor Drop Checker with 15ml Test Fluid

This aquarium CO2 monitor is a drop checker used to track carbon dioxide levels in planted fish tanks. Made from clear acrylic, it lets you easily see the liquid inside. The 15ml monitoring fluid is dropped directly into the checker, and its colour shows the CO2 concentration: blue means too low, green means normal, and yellow means too high and harmful to fish. Suitable for aquariums of all sizes. Includes a suction cup for mounting.

What's in the box
1 x Aquarium CO2 Monitor,
1 x Aquarium CO2 Monitor Fluid (15ml),
1 x Suction Cup