ETHOS Grape Diamond R2 "First grow in."

If you've got hard water AND you're adding extra nutes, I would think your thinking is correct... the question is why did you feel the need to add it? Your grow looks wonderful so far, I'd stop fiddling around with adding extra anything unless you're trying to solve a problem... There are some excellent foliar sprays on the market (FOOP being one - and no, I have no stake in that company! LOL!) if you feel the need to punch things up a bit but I'd get back to the normal NPK feedings if this was my grow. You really don't have anything to worry about! Good luck!

hey there AS420 , looks like you could be seeing the start of the potassium lock out and some kind of issue with Mg. I'm guessing it's lock out because you're feeding plenty and complementing with a foliar spray that contained some K. Absorption by the leafs is 80% compared to 20% for the roots. So if you're giving PK through the roots as well as through the leafs it's easy to go overboard. So that explains the colorful discoloration happening with the top leafs first. The fact you're seeing the serrated edges of the leafs turn that's for sure MG deficiency. Right now you're giving two additives and an NPK usually you want one of each, micronutrient (calmag), NPK , and an additive. (Amino Xtreme basically cancels out the Root+ anyway 😉). So if you add calmag now, it's a good idea, hold off on foliar spray containing NPK. or maybe switch to calmag as a spray and dont change too much except slightly reduce your feed. Up to you, hope this helps ! 🚀

Looks like it's and of life cycle to me, that's all. I see you are using pure zym that would more or less help against any root rot and unless you are watering like mad which I can see any signs of overwatering so not from the roots. As for bud rot. If it were, you'd c it. Your RH looks fine. Once you keep air flow over your canopy I'm sure it's fine. Your buds look tops. Good luck.