JBL ProAqua K -Kalium Test

Rapid test for determining the potassium content in freshwater aquariums

For excellent growth of aquarium plants: determines the potassium content in freshwater aquariums
Express test: fill the cuvette with water from the aquarium, add the reagents, pour the cloudy water into the glass cuvette until the cross under the cuvette disappears. Quantity corresponds to potassium content in mg/l
A low potassium content leads to inhibition of plant growth, although all other factors (CO2, iron and lighting) are in the required amount. Fertilizers such as JBL Ferropol or JBL ProScape K Macroelements will help increase the potassium content.
On the JBL website under "Themed Aquariums" you will find detailed information about water analysis and problem solving
Includes: rapid test for approximately 25 measurements, 2 reagents, special glass cuvette, syringe, measuring spoon and color scale. Additional reagents sold separately

Healthy aquariums with conditions close to nature The right water values are dependent on the fish stock and the plants in the aquarium. Even if the water looks clear it can be contaminated. With bad values diseases or algae can appear in the aquarium. To maintain a healthy aquarium with conditions close to nature it is important to check and adapt the water values regularly.

For each water analysis JBL provides water tests in the form of rapid tests or colour change tests. These determine a certain value or several values in one go. With these water tests you can recognise algae problems and negative nitrate, nitrite, potassium, magnesium values etc.

Why test?
Potassium is one of the macro-elements which plants in freshwater absorb quickly and effectively within a few hours and can also store for a limited time. Growing plants require more potassium than other elements. As a result, potassium concentrations can drop to a minimum range, causing plant growth to stagnate, even if the aquarium water is fertilised regularly. Potassium levels in mains water are usually too low compared to those in natural biotopes, particularly in relation to calcium and magnesium concentrations.

Recommended potassium values:
Freshwater aquarium (community aquarium): 10-30 mg/l
Lake Malawi/Lake Tanganyika aquarium: 10-30 mg/l
Plant aquarium with few fish (aquascaping): 10-30 mg/l
Marine aquarium: the potassium content is not measurable with this test