Translation: Simply in Soil (Spanish version only)
In this book, Gregory Irving reveals the tricks and secrets he has discovered on the basis of trial and error on his own indoor crops. Therefore this is a comprehensive step-by-step guide that will guide the more novice growers towards achieving a high quality crop.
With multiple diagrams for the set up, images, and value tables, it will explain issues that range from the most basic to the most complex, giving as an example his own experience as a grower.
Highly recommended if you don't have experience in growing in soil.