Owlfarm said:

400-500 ppm just seems really high to me. I calculate on the 700 scale so maybe that’s part of it. Generally at my other sites I can start at 150-200 ppm and the plants are lush and healthy up until a foot or two tall. 400-500 would usually lock the plants out.
I’ve been doing Rdwc for about ten years. Hundreds of successful harvests.

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