You are bidding on a Worm's Way Catalog the Fall / Winter 2007 - Garden Anywhere, Anytime. Articles on About guano - About high output fluorescents - About hydroponics - Calibration solution guide - Climate control importance - CO2, What to know - Composting tips - Conversions, volume and weights - Fans which suits my space? - Choosing a fluorescent system - Choosing an HID system - Identifying HID lamps - Light movers - Nutrients, pH and maximizing efficiency - N-P-K and beyond - Odor control overview - Photoperiods - Propagation: Seed and clone success - Choosing a reflector - Reservoir temps and shopping for all you need to grow. In excellent condition with no writing inside or out and NO creases to any pages. Thanks for looking and bidding.