This book is explains all the essentials of constructing a deep sand filter in a coral reef aquarium.
"Marc Weiss Companies`s "Vital" product line is dedicated to creating an Environmental Equilibrium for the aquarium hobbyist. Marine life thrives best in its own natural environment. Our "Vital" products are designed with specific targeted purposes for each product. The goal being to return your aquarium to a natural - Wild - state, based upon your chosen inhabitants."