JBL ProAquaTest CO2 Direct, Refill

The JBL ProAqua Test CO2 Direct is a quick test to determine the carbon dioxide content in freshwater aquariums.

Maintaining a suitable pH value as constant as possible is an important prerequisite for the well-being of all aquatic organisms. Above all, sudden fluctuations should be avoided. In addition, many substances dissolved in water are subject to changes depending on the pH. For example, the amount of CO2 that can be dissolved in water is directly related to the pH value. The pH value can, therefore, serve as a simple control variable for setting CO2 fertiliser systems, as long as there are no other acids (e.g. humic acids) in the water that influence the pH value. The optimal CO2 concentration for plants and for fish is achieved at a pH of around 6.8-7.3. The carbonate hardness should not be below 4 ° dH. An exact pH measurement also for special applications such as fish farming, may be required.

Our expert Oliver Knott recommends:
Inexplicable plant or fish problems are often the cause of an insufficient or excessive supply of nutrients - a water test provides information quickly and safely!