Our aquarium salt tablets for ornamental fish contain sodium chloride and magnesium sulfate. It can help maintain the pH stability of aquarium water and reduce water quality fluctuations. Mineral-rich salts such as magnesium chloride and calcium carbonate supplement the missing important minerals in the water. Its use method is very simple: every 100 liters of water into the product 10 grains, after the water change according to the amount of new water injected appropriate to add. And can quickly soften the hard water, adjust the mineral content in the water, create an ideal living environment for ornamental fish.