CO2 Checkers


BLAU Glass Tube CO2 Indicator

€11,95

With this gracefull BLAU Glass tube CO2 indicator you can easily monitor the CO2 content in a planted aquarium. Color of the added CO2 indicator fluid changes when CO2 is not within the desired parameters.

BLAU Glass Drop checker

€9,95

With this glass BLAU CO2 drop checker you can easily monitor the CO2 content in a planted aquarium. Color of the added CO2 indicator fluid changes when CO2 is not within the desired parameters.

Blau CO2 Liquid Indicator

€7,50

With the BLAU CO2 liquid Indicator you can easily monitor the CO2 content in a planted aquarium. Used in combination with the CO2 Indicator or CO2 Drop Checker.

Sera Co2 test

€12,50

CO2 is one of the most important nutrients for aquarium plants. With the Co2 continuous test of Sera, you can easily and quickly determine the CO2 content of your aquarium water.

Dennerle CO2 long-term test correct + pH

€20,95

The level of CO2 in the aquarium can be read directly from the six-colour scale in milligrams per litre. This provides an absolutely simple and reliable means of setting the correct CO2 supply level.