GloFish Water Conditioner is a scientifically developed water conditioner with unique immune boosters and stress reducers that allow your GloFish fluorescent fish to thrive and display full coloration. This easy-to-use formula removes chlorine, chloramine and heavy metals commonly found in tap water add it to all tap water before adding to your aquarium to ensure your fish are safe. This formulas immune boosters and slime protectant promote GloFish health. Use when setting up a new aquarium, conducting partial water changes, when replacing evaporative water or when adding new fish. GloFish Water Conditioner is safe and effective for all tropical fish.Shake GloFish Water Conditioner well before using. Add 1 teaspoon (5 mL, or half of a capful) per 10 gallons of water, making sure new water is the same temperature as your aquarium water before adding it to your tank. For best results, use with GloFish Color Booster to boost color and help protect against pH fluctuations. Made in the USA.GloFish fluorescent fish are born brilliant! They get their natural, vibrant color from their parents and are not injected, painted or dyed. Enhanced by a full range of aquarium kits, lighting, dcor and accessories, GloFish products create a complete underwater fluorescent experience that appeals to all ages and levels of expertise.