Instruct: Classify the given review into positive or negative sentiment.
Query: Great overview of saltwater hobby.

Do yourself a favor. Reference more than one book before seriously beginning a saltwater hobby. Much of what you will read is a mix of fact and opinion given by someone who has done more experimenting than you. Take heed to what they say, but don't hold it to be the gospel truth.This book makes a great counterpart to "The Conscientious Marine Aquarist". They clarify each other. I do feel the need to warn you that they are higher level reading, but they are well worth the effort. Both of these books cover broad subjects. This is perfect for the beginner.