Deficiency or leaves turning red/purple due to flowering?

Good practice to never add anything to your medium when there is a problem until you can rule out its not a pH drift. A 70% relative humidity (RH) at 62°F translates to a relatively low Vapor Pressure Deficit (VPD) for most plants, meaning the air is quite saturated with moisture and plants may not transpire as readily; this could be considered suitable for young seedlings or plants in the early vegetative stage, but might be too high for late veg/ depending on the specific strain and growing conditions. What I see is a plant that's gas exchange is crippled. Water doesn't leave, new water doesn't go up. New water doesn't go up, nutrients don't go up. If nutrients don't go up they stay in medium until ec gets too high and ph drifts. likes Remove Auto-translate

Okay. I'm looking at your diary You shouldn't HAVE any issue with those nutrients "Green buzz" Then I seen. Ph powder. Mate. You DON'T ph organic nutrients. Stop using that PH buffer and the issue will fix itself. You can add pure epsom salt (150ppm added to tap) just add it I. Your mix the ph will adjust itself. Stop trying to adjust a ph that's not needed. That's the only thing I can see. Also. Don't let your soil dry up too much using these nutrients. They must be moist