Water Purification Salt: This product is made by special processing and pressing. It contains a variety of minerals, inhibits bacteria, softens water quality , regulates osmotic pressure, relives and prevents disease germs, reduce the hardness of the water (calcium Magnesium lons and other water alkali impurities) for all kinds of Arowana fish , Koi < Goldfish , Parrots ,Symphysodon and other aquarium fish , not Suitable for Seawater fish. Main Components: Sodium Chloride≥98.6% Calcium magnesium ion≤0.70% Sulfate ion≤0.50% Vitamin≥0.20% Moisture≤0.50% Water insoluble substance≤0.10% Application Method: As a precaution , 100grams per 100litres of water should be used with 150-200grams per 100litres of water when combined with medication Announcements: This product is not a substitute for medicine , only daily prevention and auxiliary treatment Use with caution aquatic plants that do not adapt to salt, such as catfish, scaleless fish, and turtles.