POPETPOP Aquarium CO2 Drop Checker Glass CO2 Diffuser Monitor Regulator with Suction Cup

Description This Glass Drop Checker is every aquarium and planted tank's essential tool. Keep the CO2 levels in your tank consistent by checking it regularly. Make sure your test kit is clean. Drop 5 drops of CO2 indicator into the glass checker and make sure it is stored in the bulbous side of the valve with the opening facing down. Attach this to the side of your tank, completely submerged in the fish tank water and wait for up to 2 hours. Features - Color: As shown. - Material: Borosilicate. - Size: 4.5 x 4 x 3cm (LxWxH). Package Including 1 x CO2 Glass Drop Checker Carbon Dioxide Monitor for Planted Aquarium Fish Tank