Azaqua CO2 Checker Edge
In one glance gives this handy CO2 checker the simple answer to the apparently difficult question: If the liquid in the CO2 checker turns green, the CO2 level in the aquarium are optimal for plant growth. Is the color blue, there is too little CO2 and colours the liquid yellow, then there is too much CO2.
The CO2 checker Edge over the edge of the aquarium to be hung. For aquariums without a frame with a glass thickness up to 10mm, this is a exceptionally stylish solution! In the CO2 checker creates a bubble which gas exchange between the liquid and the aquarium water can take place.
A suction cup is not necessary and there is only a glass tube in the aquarium. Almost nothing is disturbing in sight and the color of the CO2 indicator liquid is quick and easy to read!
Exclusive: indicator liquid
Our tip: Choose at time of purchase for the CO2 indicator liquid (link)