Aquarium Salt is a very important part of the Recommended Treatment that we strongly recommend. All natural Freshwater Aquarium Salt serves as a general tonic and stress reducer for freshwater fish. During disease and stress, healthy gill function of fish is disturbed. This can lead to the loss of electrolytes through the gills (sometimes called osmotic shock), reducing the intake of oxygen and release of carbon dioxide. Freshwater Aquarium Salt replenishes natural electrolytes and promotes healthy gill function. Use Aquarium Salt with tropical fish, goldfish, and koi but should not be used as a substitute for marine aquarium salt. 1 Tbsp for every 5 gallons of water.
Directions for Use: Important Note: Freshwater Aquarium Salt does not evaporate nor is it filtered out. Use as directed and add more salt ONLY when making a water change. For example, if you remove five gallons with a water change, add only enough salt for five gallons.