Seachem Prime

Prime is the complete and concentrated conditioner for both fresh and saltwater. Prime removes chlorine, chlroamine and ammonia. Prime converts ammonia into a safe, non-toxic form that is readily removed by the tank's biofilter. Prime detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals. Use at start-up and whenever adding or replacing water.