I've encountered some weirdness that I wasn't ready for. I have 4 Royal Flush & 2 Blueberry Headband ~6 weeks into flowering, 5 gal pots with TGA supersoil in the lower third. Everything has been just grand, until I noticed some spotting on the fan leaves in the upper third of the Royal Flush, deteriorating quickly into what really, really looks like a calcium deficiency, from the pics, one plant moreso than the others, one not at all. The BBHB are totally unaffected. I mean, totally, none of the same symptoms whatsoever.
I checked the soil ph, mixing equal parts distilled water & soil, waiting 15 minutes, straining the water out with a coffee filter. 5.7 with a calibrated Oakton meter. The plants had received only moderately hard Denver water all along. I used Cal-mag this last watering, yesterday, and they don't seem to be getting worse, anyway. I've had some gnats, so I used crumbled up mosquito dunks at the same time.
Are some strains just calcium whores or is there something I'm missing?
Thanks!
I checked the soil ph, mixing equal parts distilled water & soil, waiting 15 minutes, straining the water out with a coffee filter. 5.7 with a calibrated Oakton meter. The plants had received only moderately hard Denver water all along. I used Cal-mag this last watering, yesterday, and they don't seem to be getting worse, anyway. I've had some gnats, so I used crumbled up mosquito dunks at the same time.
Are some strains just calcium whores or is there something I'm missing?
Thanks!