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Re: Boron in PMDD
>I added it for completeness. Our tap water contains trace amounts
>to start with and I added enough to my PMDD to get 0.05ppm for
>every 0.1ppm Fe. My plants must not use a lot, because it
>accumulates to ~0.5ppm. I never see it get much higher. Now the
>stickler: I test my water at work on an ICP spectrometer, 28 metals
>at the time. It sure does take the guess work out of water changes.
>Plus I get NO2, NO3, PO4, SO4, NH3, Cl and CO2 at work. Once
>a week gives me a gracious piece-of-mind.
It's wonderful that you are making such full use of that opportunity.
That sure would give gracious piece of mind! The spectrometer sounds like it
could be a powerful tool for diagnosing less common deficiency/toxicity