Hey Darren!
I don’t think there’s anything you can do to lower the ppm except to run your well water through a simple R/O device.
I’m curious to see what your ppm is after you add your normal amount of nutrients in.
I use a countertop R/O unit that I can move around the house and hook up to any faucet or even a hose bib. The water coming out is right around 15 ppm and that gives me a lot to work with and no risk of over fertilization.
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