2 weeks in to 12/12

my plant is in to two weeks of 12/12 everything is fine and both plants are nice and healthy. on a gallon of water i will give it fox farm tiger and big bloom for 2 weeks and after those 2 weeks i will do all 3 ferts tiger, big bloom, and grow big according to the fox farm list. my PH is at 6.3 - 6.8. and temps in room is 85 -88. i don't understand why the bottom leaves are getting brown spots and dots and the little baby leaves are curling with black/brown tips. i doubt its nutes burn because i started off with half table spoon. is it the heat ?

your temps are to high 73-79 humidity should be under 55%

i gotta get an ac then.lol

You can grow very healthy plants in 85 degree temps, yeah it's not 'IDEAL' but my room constantly hovers between 80-85, never a problem.

I would need to see pics, but black spots sound like a fungus. I don't know for sure, im just giving my opinion, as for the curling leaves, is the curl upwards or downwards? Up typically = overwatering Down typically = underwatering...in MOST cases. Again, this is just simply me trying to help you out. Hopefully someone else can give share their knowledge.