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Coco drip setup with the full canna line except boost. Week 7 juicy fruits auto. Feeding at 1.5EC and ph 5.8 to 6.2. I drip for 26 seconds about every 2 hours pump stops as soon as there is run off. Run off was at 5.25 Ph and 1.5 EC. I flushed with ro water with nutes 1.0 5.8.
This is nutrient burning, not a pH issue. Autos don't seem to like too much feeding in my experience.
True nutrient lock out does not occur unless the soil is above 7.5 or below 5.5.
Hope this helps, Organoman.