what is my plants problem

[am_al_59]

all is 1 month

lamp is cfl 200 with 11500 lumen
room is 70cm X 170cm X 160cm

light is 18/ dark is 6

without co2:
humanity is 55~65
and temp is 25.2~28

some day i run co2 and:
humanity is 40 ~58
temp is 30~34

at night humanity is 60~65
temp is 19~22

 

[am_al_59]

what is problem

what is problem

 

[Ashin'Kusher]

Did you accidentally spill some nutrients on the leaves? That's what it kinda looks like to me, The yellow dead leaves at the bottom look like the plant might have been sitting in wet soil for too long. Other then that they look pretty good.

 

[PoweredByLove]

looks like a nute burns to me. feed that plant less than the rest.