The Reef Aquarium Volume 1 by J. Charles Delbeek and Julian Sprung A Comprehensive Guide to the Identification and Care of Tropical Marine Invertebrates. Authored by the 2 foremost authorities of the reef hobby in America**This book is one of the best books for the reef hobbist. It contains a wealth of information in an easy to read format. We highly recommend this book to anyone wanting to keep a reef, whether a beginer or advanced hobbist.