Fastbuds Auto (G14)

End of 5th week photos -minor leaf tip either bleaching or burning? Havent figured out the main cause but does not look concerning while in current state, dont want to overfeed it any nitrogen either so trying to balance diagnosis. raised light intensity to 75% and raised the light so they have some time to adjust to intensity and flower into the light Next week will be the last feed until harvest as it takes time to breakdown organic compounds in nutrients. watering at 6.2-6.5 when the first few inches of top soil is dry light kept at 75% roughly 70-75cm away from the canopy