Dennerle Carbo Test Indicator 15ml Superfish For optimum biofilter performance use

For optimum biofilter performance use 1 capful for each 80L once a month or with each water change and whenever introducing new fish or whenever medicating an aquarium

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Dennerle Carbo Test Indicator 15ml Superfish For optimum biofilter performance useDennerle Carbo Test Indicator 15ml Dennerle Carbo Test Indicator is a precision indicator for CO2 long term testing. Suitable for any long term CO2 test. Includes colour matching scale for addition pH measurement. How Dennerle Carbo Test Indicator works: The CO2 diffuses out of the aquarium water into the test container and dissolves in the indicator liquid. Depending on the CO2 content, the Dennerle Carbo Test Indicator reacts with a color change.