This is the lowest price I've ever seen this salt. It's on Sears site as part of Ebay market place.
Keep a healthy underwater environment with Instant Ocean Reef Salt for Aquariums. It contains essential ocean reef elements in concentrations greater than those found in natural seawater with extra calcium to encourage the growth of large and small polyp stony corals as well as coralline algae. This salt provides vital nutrients and extra vitamins help to promote vigorous growth and survival of corals, anemones and other invertebrates. It also neutralizes traces of heavy metals often present in tap water. Maintain your aquarium and watch it flourish with Instant Ocean Reef Salt.
Formulated specifically for reef aquariums to provide a greater concentration of calcium, trace elements and vitamins than natural sea water.
Contains extra calcium to help ensure the growth of large and small polyp stony corals as well as coralline algae.
Provides vital nutrients and extra vitamins help to promote vigorous growth and survival of corals, anemones and other invertebrates.
Free of nitrates and phosphates and higher in magnesium and calcium.
Detoxifies and neutralizes heavy metals while effectively serving as a synthetic aquarium salt for reef aquariums.
HAZARDS TO HUMANS: Reef Crystals is not for human consumption. Keep out of reach of children. Contact in dry form may cause skin or eye irritation. In case of contact, completely flush skin or eye(s) with cool water and seek medical attention.