Finished this pot. Yep, I rinsed it down to 30 ppm and pre-charged with a full dose of CalMag and light dose of nutrients. It was definitely well-prepped. I've just been testing the GH pH indicator drops against my new meter and, wow, that was the problem. I was providing plenty of CalMag, it just wasn't doing any good because the indicator drops are blue-green at 6 pH when they're supposed to be a bright yellow at 6 pH.
I'm nearly finished with the Forum Stomper, just needs a nutrient recharge now. Do you think I should go ahead and do it with the other three as well, or just start administering properly pH'd nutrients? They don't look nearly as bad, and the newest (replacement Fugue State, 5 days younger than the rest) shows no signs of a calcium problem yet.
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