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    is it okay to let water jug w/ nute mix sit for a few days?

    All the books I am reading say ph 7 is right. that proves out on the chart posted for nute uptake. Am I wrong? Newbie here on first (very high tech) grow so all help is welcome BTW...any good threads on complete nute sched? Seedling through flower? I bought a bunch of Humboldt stuff from...
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    L.E.D Growers question! :)

    OK, I'm an engineer embarking on my first grow....LED all the way. gobbly has the best take on this here but I wanted to add a few of my own observations; in LED tech it's ALL about focus! Focus on the desired wavelength (something LED's do incredibly well) and focus of light emitted. It's...
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