Lookin better, upgraded. Need advice plz (PICS)

As you can see, upgraded to 400W HPS, and looking a bit healthier. Having issues now with a few(4-6) leaves completely turning upside down and curling. Also, a few of the tips are turning crispy and coming off. It sounded to me like a nute burn (TIPS) but the curling upside down I thought was a deficiency of something. ANY tips truly appreciated!!!

Spot problem, Ca def? Questions...(pics)

temps are a bit high and the humidity could go up to about 60 for veg

you should give us some more information, such as what nutes you're using and how often? what kind of soil is that? could you get some closer pics?

but check this out, it may help : https://www.rollitup.org/marijuana-plant-problems/88003-plant-problems-pic-s.html