The book took a little longer then I thought it should take to get to my address, by Mr.Hazen worked with me and I am totally satisfied with him and when I got the book it was in perfect condition. I am very satisfied.
This is by no means a novice read. The chemistry in it does require some level of understanding of the elements, and to truly grasp his message you have to keep your head up even through the points where the book may drag slightly. One thing is for sure. If you would ever consider reading something like this, or are at all interested in marine biology or aquariristry, this book is a definite must-have.
The response an uninterested reader would be almost hysterical displeasure with it, as it takes every aspect of the craft very seriously. I myself have picked through it many times on my bookshelf, but only recently actually read it cover to cover. The most impressive think about it would definitely be the highly efficient diagrams, such as figure 20, which displays perfectly levels after a filter change of chemicals like NO2, NO3, NH3, as well as bacteria such as Nitrosomonas, Nitrobacteria, and Heterotropic bacteria. There is another type of bacteria discovered more recently than the publication that would be listed here.
This and other works by Martin A. Moe such as The Marine Aquarium Handbook are mainstays in the marine biology world. It cannot be forgotten to mention his very interesting introduction. He refers to our responsibility as human beings with all that power as the super race has; we must ask ourselves the morals of aquaristry. Is the concept of providing a synthetic or better yet growing an organic ecosystem for a bio loads particular needs right? He states that if this question is at all uncertain in its answer that you not take of this hobby.
VERY COMPLETE / BUILT AN ENTIRE FISH STORE W/THIS INFO

THIS IS THE MOST COMPLETE SOURCE OF KNOWLEDGE FOR THE AVERAGE HOME ENTHUSIAST. I USED THIS BOOK AND ITS DIAGRAMS TO BUILD THE SYSTEM THAT RAN MY TROPICAL FISH STORE.
Considered one of the classics

This book has been widely reported to be one of the classics. I can see why - there's a great deal of detail here, especially on the technical aspects of marine aquarium setup. There are some points of contention here, though, with other literature on the subject - particularly with Deelbeck's Reef Aquarium book, which cites it extensively, but disagrees stongly with several points.
This is a book any serious reefkeeper should own.