Droppy sad looking plant with spots on lower fan leaves.

Hey all, I'm wondering if anyone might be able to help me figure out what's going on.

I thought this one was underwatered when I saw the droopyness yesterday.

It was weighing a bit light so I gave it a good watering. I check the pH of the water using aquarium pH tester solution, and it seems to test out in the mid 6's...it's hard to tell, but the test solution is green not blue or yellow. (Blue would put it above 7. Yellow would put it below 6).
However, after yesterdays watering it didn't seem to perk up. Then today I noticed spots.

It's in a 50/50 mix of FF Ocean Forest and FF Happy Frog, no additional perilite, no nutes. It's about 25 days old.
Also, one of my other plants is showing similar spots, but it seems to be doing ok, otherwise.

This one here has a problem with the leaf tip getting funky...dry/crispy. Same soil, no nutes, same age.




The group outgrew the seedling lighting and went from 192w T5, ~74F @ 30%RH,
to 324w T5 ~87F @ 30%RH.

But the top one was showing droopyness before switching the lights.

Not much I can do about the heat for now, other than leaving the door open a bit more. I'm working on getting more fresh air into the grow room.

Try getting a fan on e plant, crispingon the tips may be due to heat stress and the top plant looks overwatered.If you've overwatered your plant, its leaves will be firm and curled down all the way to the stem of the leaf. Try watering when the top couple of inches of soil is dry

over watered, stop watering and she will be great and start growing again.

thanks!

this is my second grow from seed. I had the lights a little too close and it was starting to heat stress the group out.
moved the lights up to 6"+ above the top of the canopy and put another fan in for air circulation. gonna feed them 1/4 stregnth nutes next watering. but i'll let this droopy one dry out a bit before feeding it.