Sera kH-Test

The sera KH-Test is a water test to check the KH value in the freshwater and saltwater aquarium, as well as in garden ponds.

Determine water values
pH value, carbonate hardness (KH), ammonium and nitrite are among the most important water parameters. Extreme deviations from the target values can suddenly become an acute danger to life. Whenever the appearance or behaviour of the fish is conspicuous, or other peculiarities (eg sudden dying of aquatic plants) in the aquarium are noticeable, the basic water values should be checked first. For routine control, the easy-to-use test strips can be used. For more accurate results, we recommend the test of the sera aqua-test box in a sturdy plastic case. Total hardness, nitrate, nitrite, phosphate, iron, copper, chlorine, silicate and oxygen should be known to the experienced aquarist as averages in their aquarium. Checking these values every now and then is usually enough. If suspected (eg poisoning, algae problems, shortness of breath) these parameters should be examined more closely.

The carbonate hardness (KH) stabilizes the pH. It catches fluctuations that e.g. caused by the biodegradation processes in the aquarium and garden pond and the carbon dioxide consumption of the plants. A too low carbonate hardness (below 5 ° dKH) is the cause of strong pH fluctuations (acid fall risk!). KH values between 5 and 10 ° dKH stabilize the pH values in the company aquarium. Malawi and Tanganyika cichlids require higher pH and KH values.

Our expert Oliver Knott recommends:

With the sera KH-Test, you check your KH-value very exactly by means of a drop test!