some leaves "clawing" some "twisting"

hi there RIU im having a few issues with my plants. my soil ph is 6.9 and i have been watering them using bottled distilled water temperature of grow cabinet is a steady 76.1 lights on 24/7 . im havin difficulty matching my symptoms so i thought maybe someone else has this happen and knows the problem..

i have been reading up on defincencys and im thinking magnesium def? or possibly over watered / major stress at one point here are the pics

the fan in the 3rd picture is just a computer fan i threw in the corner to help air circulation.... not my primary fan i have 1 110cfm fan for intake and 110cfm for exhaust

plants are in 3 gallon plant bags i purchased at my local hydro store, the food i have for them is 24-8-16 is that too outta wack?

How often do you water?

i usually wash my hands well and stick my finger into the soil to about the middle of my index finger and if its dry i water 600ml each plant (3 gallon plant bags) it usually ends up watering every 3-4 days.

hello bro..for the most part your plant's look good. i think it's your p.h and maybe cal/mag...p.h your water and give no nutts for a week ,and let's see what then,how old are your plant? what kind of soil r u growing in?

its miracle grow potting mix, i got the soil ph to 6.8 and i water with distilled water from the store it is purchased in 1 gallon jugs, i figured that would be my best bet as i dont have a water ph tester. i could be wrong tho ... the plants are about 2 weeks old from sprouting threw the soil. if its cal-mag what is best for fixing that issue? my local hydro store doesnt carry much as i tihnk its going under .... anything you can buy at a garden center / nursery?

would my humidy be a problem?? its never over 22%

yeah the humidity issue is what is causing stress. I like to keep a humidity level in veg between 50-70% and between 30-40% in flower.

how can i raise humidity without spending a fortune as this is just an expierment i dont want to fork out a bunch of money on a vaporizer

got my humidity problem solved, but what could i use for a cal-mag def? anything you can buy at wally world or a nursery? my local hydro store is closed now

Looks like cold to me!

def isnt cold.... my temps are always between 75-79F