Contiuum - Ocean Snow
Marine snow is a word first coined by American naturalist, marine biologist, and explorer William Beebe in the 1930's to describe the continuous shower of organic and inorganic particles that he observed from his bathysphere.
In the ocean, marine snow provides a means of transporting nutrient rich matter from the photic zone near the surface towards the ocean floor.
Using in a aquarium:
Ocean Snow provides an excellent means of supplying both organic and inorganic nutrients to filter feeding invertebrates of all types. It is useful for hard and soft corals, tube worms, clams, sponges, tunicates and others.
Continuum recommends that the hobbyist vary the types and sizes of foods delivered into the reef aquarium. Other Continuum foods that make good choices for this food rotation include Coral Exponential, Micro• Blast, Zoo•Blast and Phyto•Blast.
Also, occasionally blending the foods and using them as soaks for other foods will give your invertebrates a variety simulating nature.