The brackish-water fish mostly are kept in aquarium tank with symptoms of darkened skin, listless, fin-rot, fungus, and parasites infections. The symptom occur frequently again even though recovery from medical treatment applying this mineral salt is the only radical keeping for all brackish fish. This product is able to convert tap water into the water suitable to brackish fish growing. Our salt contains more than ten different minerals and trace elements. It can definitely improve healthy resistance, to encourage fish to grow healthy and to enhance colors of fish.