We’re returning briefly to our roots in this issue of Maximum Yield. No matter what technology we use to grow, how plants grow will never change. The basic biology remains constant, as do the problems growers encounter, such as pests, nutrient deficiency, and pH control. Featuring: Hydro Nutrient Management: What Every Grower Should Know, The Importance of Growroom Hygiene, and Maintaining and Troubleshooting pH Control Systems.