Volume one is a must have for any marine aquarist. It discusses much more than identification and care of inverts. If I had money to buy only one book this would be it.
this is a good book if you are looking for a textbook format, but if you are looking for more of a picture referance format this one is not for you.
Great Product

This book came in a timely fashion and was very well kept. Great book to read when looking for the answers to questions you may have. Awesome purchase.
Great Series

This series is well worth every penny. You can find a lot of books for less but that is what you are getting. Save yourself some money and get the series that thoroughly do cover every aspect of the hobby in amazing detail. This series is amazing and you will love it. It is a bit scientific but it does not leave anything out.