KH Test - Uncategorized JBL - Free user manual and instructions

USER MANUAL KH Test JBL

, a large proportion of these salts is represented by hydrogen carbonates. By denition, the proportion of calcium and magnesium salts represented as carbonate is described as carbonate hardness. As a rule, the carbonate hardness is below the total hardness value. In certain exceptional cases (e.g. the East African lakes) the carbonate hardness can be higher than the total hardness. Most freshwater sh and plants in an aquarium thrive well at a carbonate hardness of roughly between 3 and 15°d. For successful CO

fertilization, the carbonate hardness should not fall below 4 to 5°d. For optimized pH buf fering action in saltwater, a carbonate hardness around 7-10°d ought to be maintained. In the garden pond the carbonate hardness plays a vital role as a stabilizer for the pH level. Algae (thread and oating algae) in particular “consume” carbonate hardness by rapid assimilation (biogenic decalcication), driving the pH up to levels which are dangerous for sh (above 10° d). Carbonate hardness levels of at least 4° d should therefore be maintained in garden ponds.UK What to do in the event of unfavourable values There are various methods for reducing water hardness (e.g. by using a reverse osmosis unit such as the JBL Osmose 120). Ask your pet shop specialist for details. Use JBL AquaDur Plus or JBL pH-Plus to increase the carbonate hardness in freshwater aquariums. Use JBL CalciuMarin in marine aquariums. In garden ponds the carbonate hardness can be increased by the addition of JBL StabiloPond KH. Instructions

1. Repeatedly rinse the measuring vessel with the water to be

2. Fill the measuring vessel with the water to be tested up to

the 5 ml mark (CAUTION: the lower line of the water level must coincide with the marking).

3. Add reagent one drop at a time, counting the drops, and

shake after each drop until the colour changes from blue to yellow-orange.

4. One drop of reagent solution used corresponds to 1°