Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointment

This book is disappointing. It focuses too much on breeding cichlids, yet it claims to be a book for beginners. Beginners are not interested in breeding cichlids, they just want to keep their fish alive. The book is also very vague. For example, when discussing the proper PH level for Malawi cichlids it says keep it above 7. What does that mean, 7.5, 8.2 ?