Hi guys, question…PPM run off, let’s say my target is 400, and I water and my run off is 200, the next watering do I feed at 200 or 400? Thanks 👊🏼👊🏼
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200. It's a guessing game though because you don't know how much the plant has consumed. Also, if you have a soil with organic amendments in it, it's breaking down into usable nutrients for the plant which will also increase the PPM.