55% OFF for Bookstores! NOW at $ 42,89 instead of $ 49,19! Want to start your own sustainable and affordable DIY hydroponic gardening system? Want to discover all the secrets of this horticulture with detailed explanations for over 50 plants? If you are looking for just that then keep reading because this easy step by step guide was written just for you.... Hydroponics is a type of horticulture and a...