This pre-mixed salt water has been measured to a specific gravity of 1.023-1.025 using Instant Ocean salt mix and reverse-osmosis water, eliminating harmful and
algae-fueling chemicals found in municipal water. Seapora's pre-mixed salt liminates the need for lengthy mixing and dissolving of dry synthetic marine salt mixes, giving you more time to enjoy your aquarium. Safe for use in marine
aquariums only. When used properly, Seapora's pre-mixed salt water helps save time and provides a healthy marine aquarium environment.