This paperback book is set up in a helpful question-and-answer format, designed to answer all types of questions about hydroponics. 198 pages, Hydroponic Questions & Answers has 287 different answers for questions about things like nutrition, sterilization, even plant physiology. It includes a glossary and index for quick reference. Gardeners will appreciate the book's design and easy-to-understand answers. It is a practical question-and-answer seminar offering the hands-on experience of a hydroponics grower, author and teacher.