Salifert KH/Alkalinity Test Kit Bio Media Best results are achieved when

Best results are achieved when the Gems are placed after your system's mechanical filtration

Lets run through the features

Not for use in freshwater aquariums

Concentration: Treats 250 liters (65 gal)

sodium selenite)

Salifert KH/Alkalinity Test Kit Bio Media Best results are achieved whenSalifert KH Carbonate Hardness Alkalinity Profi Test Kit 100 200 Tests Made in Holland 100 200 Tests Fast Accurate Calcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some other substances are needed as well. A few other constituents are carbonate and bicarbonate. These two substances also have a major impact on the stabilisation of the pH in the proper range of 8. 1 8. 4. Such stabilisation is also called