@Mr_Positivo, I think your comments would apply if I were growing in soil but I believe I'm OK with this feed schedule because I'm growing in coco hempy buckets, a passive hydroponic method. Everything I've read about growing in hempy buckets says to water/feed using a drain-to-waste feed schedule and give them enough to get at least 10% runoff. I haven't checked the pH or conductivity of the runoff but I will next time I drain the reservoir. The 850 ppm I'm currently running is measured, and includes the CaMg I'm using at 4ml/gal I'm using. I've also read that you should water/feed every 2-3 days when the plants are small and up that to daily when the plants get big and drink a lot. It's worked well so far, with only a little brown at the very tips of the leaves.
I may dial this back to 700-800 ppm.
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