A tool that allows you to monitor the carbon dioxide level in your aquarium from any angle.
Smart design that shows the meaning of colors when reading, which indicates the percentage of carbon dioxide as follows:
1/ If the reading indicates green, then the carbon dioxide level in the water tank is appropriate.
2/ If the reading indicates a phosphorous color, then the percentage of carbon dioxide is high in the water tank, and this will lead to the death of plants and living organisms.
3/ If the reading indicates a blue color, the percentage of carbon dioxide in the water tank is low, and this will lead to the death of plants and living organisms.
Brand: Esta
made in china
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