5 Pounds Pure Pond Salt Shipped Priority Mail Natural Pond Salt made from evaporated sea water for pond fish wellness Adds essential electrolytes to promote koi other pond fish health Use for short-term salt baths for effective natural disease treatment What's the secret to keeping healthy koi? A dash of evaporated seawater! Adding pond salt in small doses will help boost your koi's natural defenses to disease, stress, and nitrite toxicity. Mineral-rich tonic supports healthy gill function providing essential electrolytes with every breath, reducing the risk of stress-induced osmotic shock and even temporarily blocking the toxic effects of nitrite. Safe for fish and pond plants, as well as surrounding wildlife and pets when used as directed. For ornamental pond use only. NOTE: Once added to the pond, POND SALT does not evaporate and is not filtered out. So, add additional POND SALT with each water change. The addition of POND SALT is not recommended when topping off due to evaporation. More Information Directions: Ponds with Plants: Add 1-1/4 cups of POND SALT for each 100 US gallons of pond water. Ponds without Plants: Add 2-1/2 cups of POND SALT for each 100 gallons of pond water Disease Treatment: Short-term salt baths are beneficial to kill external parasites and treat fungal infections. In a plastic container, dissolve 2-1/2 cups of POND SALT in 10 US gallons of pond water. Do not use tap water. Carefully place infected fish in the salt bath for 5 to 10 minutes, Do not leave fish in the salt bath for more than 10 minutes. Return the fish to the pond. Treatment may be repeated after 24 hours. Free Shipping to all US States And Territories Free Shipping To All US States And Territories