70% of this book is about hydroponics. The insides are very cheap. Unlike the quality and wealth of knowledge in “The Great Jorge’s” given – “Marijuana Horticulture …”. Sorry Mr. Mowta. . . . . . but it was my money. Aloha! Rating: 5.2

This book is one of the best sections Hydroponics out there, if you are looking to have to build a system. It covers all types of systems and has a parts list. The drawings are black and white, but they are clear and work well. Everyone, no matter what your growing, then points would be helpful. As for the rest of the book is laid out very well. This book has lists and step by step instructions for everything, but perhaps lacking more detailed information than you need. For example, lights. It tells you what you know and what square meter area of a certain wattage can be used for and what types of lighting, but it is concise, where I was reading in search of different lights, etc. In short, it tells you to learn what need to reach your destination without the great detail every light in the market. Furthermore, it is great book and you can not hang at all that you do not really need another book if you are looking for a description of each light on the market. It has color photos, but it is the style in which the color images are three sections of about 8 pages with several color photos of plants at the most, but not the hydroponic systems, the line elsewhere. Rating: 5.5