Contains one (1) API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle | Makes tap water safe and protects fish with dual-action formula | Removes chemicals from tap water that are harmful to fish | Replaces fish’s protective coat damaged by handling or fish fighting with healing power of Aloe Vera extract | Use when adding or changing water, when adding new fish and when fish are sick or injured | Instructions: Add 5 ml. for each 10 gallons of aquarium water. Double the dose to replace slime coat and to repair damaged skin and fins