Is there a good "rule of thumb" N-P-K to start with for flowering? I have a 4-6-3, 3-9-4, and 2-2-2 to mix for various N-P-K's. I'd like to get close to an ideal mix when I top dress in a few weeks. I know fertilizer needs will vary by strain, but I'm interested in a baseline.
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Feeding. Chemical composition