CO2 Indicator Aquarium Fish Tank Glass Drop Checker CO2 Diffuser Indicator Monitor CO2 Monitor

Label:Yes Model: Musical note/Ball/Water drop/Hook Condition:100% Brand New,High Quality Package included:1 bottle x Indicator solution or 1 glass drop checker Product: Aquarium CO2 Indicator Materials:Borosilicate Glass Size:As picture show Test solution capacity: 15ml For: Aquarium plants grass Features 1. The change of the three colors of the detection fluid indicates the CO2 concentration of the fish tank. 2. The indicator made of glass is corrosion-resistant, simple and beautiful. 3. There are 4 types of glass drop checkers for you to choose. Notes: 1.The test solution should be replaced once a month. 2. Please allowed 1-3mm differences due to manual measurement, thank you for your understanding! 3. Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item.