Water Conditioner for All Fresh and Salt Water Aquariums Makes tap water safe for fish. Neutralizes chlorine, chloramine, and heavy metals harmful to fish. Enhances natural protective slime coating of fish. Complete formula, works in seconds. AquaSafe makes tap water safe for fish by neutralizing chlorine and heavy metals present in municipal water supplies. AquaSafe also neutralizes chloramine by breaking down the bond between chlorine and ammonia while reducing both the fish-toxic chlorine and ammonia components. AquaSafe will not remove ammonia from an uncycled, overstocked, or under-filtered aquarium. Additionally, AquaSafe provides a slime coating to help wounds heal and protect fish from abrasions. AquaSafe should be used when setting up a new aquarium and with every partial water change or evaporation replacement. Important: Always make sure that replacement aquarium water is same temperate as existing aquarium to additionally safeguard inhabitants. Treats 200 gallons/757 liters. Made in Germany.