Thisrty Plant

I believe my plants are thirsty, but im not sure exactly what its thirsty of?. Im reading post on here about over watering n under watering or heat stress. My A/G is in the closet i leave the door open but today my nephews were over n i had it closed. I opened it n the plants were droopy i freaked checked my pH it was 5.3. I didnt know what to do i took a shower came back n one of the plants had broken right in the middlle of the stem?

Shit.... I'm sorry to hear. :< I forget, Tap water, Well Water, Distilled Water, Spring Water ??
How hot does it get in the closet and how long was it closed for? You should be able to gauge what the temps rose to; give or take.

When you looked were the lights off or on?

If off than it's normal for the leaves to be drooping their sleeping dude.

If light was on you got heat issues, need fresh air and misting.

Peace

Next time a plant breaks just splint with a couple tooth picks and a little masking tape, Loosely!