Instant Ocean sea salt contains every necessary major, minor, and trace element and has no nitrates and no phosphates. Instant ocean 150gal sea salt box of 3-50gal bags 42lb a nitrate-free and phosphate-free synthetic sea salt. it insures that even the most delicate marine fish, invertebrates and plants will thrive. it is now improved for even faster dissolving.
Coralife scientific salt a high grade scientifically designed salt for the serious reef and fish aquarist. all important nutrients and elements are concentrated into our salt for a truly enriched seawater environment. Oceanic has developed a superior sea salt to help you create the most natural environment for your fish. All natural ingredients insure the absence of nitrates, phosphates, and ammonia. Specially developed micro-crystal dissolves almost instantly. No salt residue High calcium and magnesium for added coral health. Tropic Marin it is free from synthetic additives and contains no nitrates, phosphates or silicates. tropic marin sea salt turns fresh water into salt water, which is practically indistinguishable from natural seawater.