If using T5 grow lights
My veg tent has been getting some funny leaf edge cupping and the odd leaf twist, I though it was heat stress now not so sure, or could it be wind burn i have a small 6 inch fan in their but it points at the wall.

I don't think it's ph or feed, becuase they all different i have 5 coco, 1 soil and my clonner all different ph and feeds.

My temps I take off the wall in pic below I was running day 75f-77f and day it usually set around 75f-76f most the time , the off 76.8f
Humidity was 50-60%
Extractor 4 inch in 25%idel fan set to 24.5c kick Im..
And night temp i was aiming for 72f min so hits 72f lol rad kicks in hits 74f I think and repeats,,


Does anyone know the best temps I should be aiming for on my wall thermometer, if read so many different temps, 73-75 or 75-77the usually rule,
If read night temps 68-70 problem is are these floor readings or canopy height

This is where intqke my reeding from not directly on the floor pic below


The last fewdaydiv tried different temps can't figure out whats best
If also turned my idel to off ,now th2 extractor fan kicks in every 10-20mins when the heat rises to my fan setting, but with this in the night. I'm getting on air exchange stall is problem with t5 veg tent?

I dont know what the best temps are and if the temps should be taken floor level in this small tent.
You will see 71 on the themmo at the moment as if Been playing about with my temps last few days and they got tad low today..

Also My air temp out aide my tent is 22c

See the funny blotches and cupping on some leaf eadges.