WEAVERBIRD CO2 Drop Glass Checker Aquarium Fish Tank Carbon Dioxide PH Checker Tester Monitor Cylinder Concentration Detector

Stable and Quality Guaranteed: Made of high quality glass, ensure test result stable, with suction cup design, simple attach it on the wall of your fish tank.. Size: The glass drop checker is about 4.5 cm/1.77"" in height, monitor to be installed below the water surface about 10cm, it is recommended not to install too far from the refiner.. Apply to: Used to test and monitor the concentrate of the aquarium water plant fish tank, and it suitable for fish tank, aquarium, especially aquatic plants, tropical fish to watch and cultivate for fish tank.. Easy to install and use: Make sure your test kit is clean. Drop 5 drops of CO2 indicator(not include) into the glass checker and use straw to fill the tank water with the test solution area to 1/2. Then turn the opening facing of drop checker down. Use a sucker to attach it to the side of your tank and wait for up to 2 hours.. Package includes:1 x Glass checker (C02 indicator reagent not included), note: The color show :Blue - insufficient Co2,Green - sufficient Co2,Yellow - excess CO2.