1st auto run

99.9% of the times, when the tips burn like that, its an excess and not a deficiency, however you could have an excess causing a deficiency, that's something that happens. If you overfeed with P, K, Cal, and some more, im just saying these from memory, these will cause lockouts in other nutrients. Now... i can't tell yet what it could be from just these pictures, maybe some1 can but i can't, so if you happen to add more pictures of the affected leaves (burned, color changed, contorted, etc etc) then i can try and give it a go, but for now idk. But if you feed and the symptoms beggin to appear or continue developing, then you just gotta stick with water for a while for her to recover. Stay lit growmie.

Overdrive works for you during the last third of your bloom phase, but you get tastier, higher quality crops if you stop all feedings 10 days before harvest. For plants in their last 2-3 weeks of growth, the ingredients in Overdrive are more effective at increasing crop value than Big Bud, which is used earlier in the bloom cycle. There ya go growmie, use for the last 2-3 weeks, then at the end just add another 10 days of only water or do a flush and its done. Good luck and stay lit growmie.