What it does:
Our Glass Drop Checker is used to determine the specific concentration of CO2 within an aquarium. Special drop checker fluid is required in order to measure the rate of CO2 concentration.
Low CO2 : Blue
Med CO2 : Green
Hi CO2 : Yellow
Please note that there is a delay in the reading and usage of the drop checker is purely an estimative indicator of CO2 levels within a tank.
Easy to install
For best results please ensure the bulb is half full which will allow for the greatest area of gaseous exchange
Do not get any other liquids in the bulb when installing back in tank, this may cause incorrect readings
1 x Glass Drop Checker