Day 23 of flower. She’s in a 3gal smartpot M3 soil. I water with tap that’s around 7-7.5 ph that I adjust down but my ph pens have been acting up so I feel a little blind. I should also mention these are only on the lower fans that don’t get much light.
Everything else look happy and healthy
May just be sucking some nutes out of the lower leaves . Wich would be fine long as they it doesn't progress extremely rapid. I believe the term is necrosis but correct me if I'm wrong