Auto Grow #1 Cropking & MSG Mixed Lot

What a difference a week means struggle wise. I went from battling high temps to being concerned about low temps and humidity. I ended up piping in air conditioned air and that lowered temp some. I added second intake fan to supply side to boost airflow throughout tent and then added a small humidifier to the mix to bump up humidity from low 40s to high 40s. I am running lights 20/4 rotation with 4 hours off being noon to 4 pm for heat purposes. I lowered the light from 24" down to 20" right now. Thinking if its gets too cold in tent with standard AC air being piped in, I might use space heater in AC space by intake to heat air instead of putting in tent itself but I am hoping that wouldn't be necessary. All 3 girls look fine. I think I caught myself starting to over water so I am cooling it with that and doing every other day sparsely at this point.