This all-natural salt is made from evaporated sea water and offers an array of benefits to your aquarium, including helping to promote healthy gill function, improving the efficiency of medications and reducing the harmful effects of nitrite. Witness the wonder that salt can have on your aquarium with this API Aquarium Salt that's derived from evaporated sea water for an all-natural conditioning solution. The salt works to help promote healthy gill function in your fish, while also improving the effectiveness of medications. By reducing the loss of electrolytes in your aquarium, the salt also helps reduce stress on your aquatic pets, and reduces the harmful effects of nitrites. All-natural salt made from evaporated sea water helps promote healthy gill function and helps reduce stress and loss of electrolytes in your fish by reducing the harmful effects of nitrite Improves the efficiency of medications Available in 65-fl. oz. containers *See menu selections above for sizes and styles in stock and available online.