Fortified with calcium for healthy exoskeletons, Spectrum crustacean formula is designed for crustaceans and invertebrates like anemones. The high nutrient concentration found in New Life Spectrum is also great for macro-feeding corals. There is a New Life Spectrum formula for almost every freshwater fish, marine fish, crustacean or coral in your aquarium. The Spectrum family of formulas all feature high-density, quality nutrition from natural ingredients and uses a natural, plant-based preservative with the trade name Naturox instead of ethoxyquin. Formulas come in a variety of jar sizes: from 60g jars all the way to 2200g bags. Code 102297 – New Life Spectrum Crustacean Small Sinking (.5-.75mm) 60g