Sera | Baktopur Freshwater treatment to protect ornamental fish from mouth and fin rot and bacterial infections. It cannot be used with fish used for human consumption. Keep it tightly closed and do not leave it within the reach of children or household pets. It must be stored at room temperature, and protected from light. It is used for marine aquariums only in case of quarantine. Contains: 50 ml for 800 liters. Made in Germany.