I saw you mention fox farm nutes a little ways back. I tried them but didn't have a pH tester so I gave them up. I just kept burning them. Now I make compost tea with composted cow manure, bat guano, and sucunat. I don't worry about pH testing and haven't had any real problems yet. Plus it is more natural. The fox farm nutes are only 80% organic, which in my book makes it 100% not organic. Think of it like steroids. A baseball player may be able to break the home run record by taking them, but he still ends up with wild mood swings, acne, and a small penis. Use all synthetic nutes and you may end up with a beast of a plant, but the quality will suffer.