when leaves cup or roll up like that its called "Taco -ing or Canoe -ing" its caused by "Vapor Pressure"
google it, read up ,
you can apply some simple things to correct this,, matching your humidity to your temp is the best thing,, but if you have no way to control humdity, most of us have ways to control our temps,
if you can not adjust neither of those,, then adding fans helps and increasing your exhaust fan speed helps,
strong lights can effect VP, and raising the lights if the plant is struggling helps VP in this instance,, i doublt your having those issues with the store bought LED Bulbs
Speaking of your led bubls,, take off the outter glass layer,, twist it off, or break the glue,, if that doesnt work break off the glass gently and expose the led diodes,, you will get a bump in light power,, plus you wont be going thru the frost of the glass any longer,
hope this helps
https://www.thcfarmer.com/community/threads/vpd-vapor-pressure-deficit-what-it-means-to-my-plants.71077/
