KORDON Concentrated Pond Fish Protector is the ultimate solution for healing and protecting your koi and water garden fish. Made in the USA, this professional-quality water treatment minimizes infections and eases stress to reduce fish loss and keep fish healthy. It's a vital pond conditioner and health supplement to aid fish when introducing them to a new pond, when handling, illness, and during transport. Concentrated Pond Fish Protector forms a multi-layered protective slime coating on fish skin, which helps minimize infection, heal bruises and missing scales, and protects fish during handling. It's also formulated to detoxify the free ions of harmful heavy metals present in public water supplies, such as zinc, iron, lead, copper, and arsenic, which can be lethal to fish and invertebrates. Fish Protector's special polymer colloids don't irritate the fish's surface like other products that use salt. They also absorb medicinal dyes and antibiotics, making it easier to apply these medications to the fish's skin. Fish Protector combines skin slime replacers with vitamin B12 and increased Echinacea, promoting the normal healing process of injured fish.