i’d say LOOKS like calcium/magnesium with more deficiencies possible if not corrected soon.
i have had a 3 1/2 week calmag defi/problem. i utilize VPD, environment is good, soil, water, food all good. i use foliar spraying to diagnose problems. she loves a calmag foliar spray. it’s gotta be the LED LIGHTS that are the culprit.
i took one plant and moved it outside. both were suffering a calmag defi. the outdoor plant turned around nicely. she is healthy and growing green. the other plant is still in tent and still suffering. the only difference is the sun v.s. the HLG 260 QB V2 rspec hanging over her. water/food the same less when it rains.
i follow manufacturers recommendations for power and height for light.
my question is with new LED lights running cooler temps, higher light intensity are we locking out calcium and then other nutes as a result ?
LED lights are changing so fast. can plants and growers change or adjust for the new growing curve with each new QB LED light that comes out.
i’m not a 20 year seasoned grower, not pretending to be. i have spent WEEKS online diagnosing and still looking for the answer to this. i won’t flip her till she’s healthy and it’s time to flip… frustrating.