I can guarantee you that if you kept your room at 75F you will be fucking pissed at the yields.
I know ALLOT of growers here in Ca. When I made the switch, even I didn’t trust what one of my buddies told me and he already had plenty experience with LED’s.
It’s all about leaf temps. When you were growing under Hps, the leaves were a good 5F warmer than the room temp due to IR. LED’s just don’t add that heat to the leaves.
If I were you, while you’re still doubting things, go pick yourself up a laser infrared temp gun and check out what the leaf temps are
No prob with terps. Not one grower I know.