Use in freshwater aquariums to enhance slime coat to protect fish. Conditioning Salt also prevents Nitrite damage to gills and replenishes the necessary electrolytes to reduce stress. Active Ingredient s Sodium Chloride. Instructions Use during routine water changes and when adding fish. For optimal benefits use with Top Fin Water Conditioner sold separately and Top Fin Bacteria Supplement also sold separately. Dosage Use 1 Tbsp. 1 Scoop for each 5 U.S. Gallons 19 L Product of USA.