API Stress Coat Plus - 1 Gallon (Treats 7,680 Gallons): Free U.S shipping
Directions: Add 5 ml per 10 US gallons (38 L) of water or 1/2 cup (120 ml) for each 240 US gallons (912 L) of aquarium water. 1 oz treats up to 60 gallons. 4 oz treats up to 236 gallons. 8 oz treats up to 474 gallons.