Instruct: Classify a review as either positive or negative.
Query: high horse - "my way or you are wrong" tone

A better book in this price range is John H. Tullock's Natural Reef Aquariums, which seems to me to be based on Julian Sprung's work. Or, spend more and get the bible of marine aquariums: The Reef Aquarium three volume set by Julian Sprung and Charles Delbeek. The authors are well respected, their books are very detailed, and they have a more polite attitude toward the reader.