Instant Ocean seatest Hydrometer full-range

No matter what size your aquarium, Instant Ocean® sea salts and water care products offer the smartest, easiest way to bring to ocean home. Our scientifically formulated sea salts are used exclusively by many of leading large-scale aquariums and research facilities across the country. Marine invertebrates like corals, sea stars, tube worms and clams need proper levels of essential elements maintained in their seawater environment. Accurate, reliable water test equipment is absolutely vital to creating and sustaining a healthy, successful marine environment. Rinse hydrometer with fresh water before using. Slowly fill hydrometer by dipping bottom corner fill port below water surface until water flows up and over inner weir. Dislodge air bubbles by tapping hydrometer gently with pencil. Placing hydrometer on a level surface, read specific gravity. Rinse hydrometer with fresh water before storing.