GloFish Water Conditioner is a scientifically developed conditioner with unique immune boosters and stress reducers that allow your GloFish to thrive and display full coloration. This easy-to-use formula removes chlorine, chloramine, and heavy metals works features slime protectant to promote health. Use with GloFish Color Booster for best results. Scientifically developed to make tap water safe. Unique immune boosters and stress reducers. Removes chlorine, chloramine, and heavy metals. Slime protectant promotes health. Works with GloFish Color Booster. 4 oz.