Whats going on? Help

Well just transplanted yesterday..they looked saggy and droopy before I did but I thought probably root bound...It has been cold here where I am and think might be cold when light goes off, so today changed it to 24 hrs light, the water I been giving them was pretty cold, tho...I ph my feed and my water...what could this be? And yes I used Cal Mag but only when I feed not water..my water containers do have a little green alge type look at the bottom..idk if that matters...thanks in advance for any advice and constructive criticism.

They look dry....sagging leaves, soil looks dry, gap between edge of dirt and pot. Also they look under fed.
Hard to say cuz u didn't say what kind of soil/medium they are in, but if it's a medium with no fertilizers then u should feed them.

It's hard to tell the colors of the leaves with that light.
How often do you water them? Looks over watered.

Over/under...pick them up. Are they light or heavy?

@trambles is right. They're thirsty.

You have to increase the water/food as they grow. Especially with increased light, temp, and humidity.

If cold is a concern,maybe get them off the floor a bit.