Is this heat stress

[PlatinumLEDTom]

Thanks for the update SMOOTHseven. You definitely don't want to have the bloom mode on until pre-flowers stage is complete (around 4-6 weeks). Once the vertical growth has stopped (week 7-9ish during an auto flower) you can induce flowering by turning on bloom and switching your light cycle to 12 hours of uninterrupted darkness and 12 hours of light. Good luck!