I’ll add, you don’t need defoliation unless you need airflow for the plant. I have ran slight breeze where no leaves are moving but just a hair, and I mean lick your finger and if you feel a breeze you’re good. I don’t see heavy leaf count crowding, you are good on air flow if your finger feels the breeze. Fans are just to even out the temp in the room/area. It isn’t a cooling device. If you’re following the lights distance schedule, don’t strip. You can be at 100% intensity at this stage and the distance the light suggests and be solid. I run 19-24 inches though with
Spider Farmer SF4000. What is critical is you fix the nutes. All other junk is Miniscule looking at your plants. PH, check. Room temps, check. air flow, check. Soil moisture, check. Now, how much PPM in your runoff? Is it higher or lower than the feed water. Bet it comes out high.