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Reading suggested to the Intermediate Grower Introduction What Is pH ? Why is pH so Important ? Changing soil pH ! What Type of Lime to Use ! How Do You Know When You Need To Worry or Adjust Soil pH ? Before Adjusting Soil pH What You Need To Know ! Testing Your Soils pH ! How To Adjust The pH of Organic Soil In A Potted Plant ! pH and Cloning ! A Word About Mycorrhizal Fungi And pH ! The Bottom Line – pH and Marijuana !