Looks like overwatering, and have you given those infants nutes already? (too young)

Quote Originally Posted by Divestoned
Rusty and I are both sorry for fighting in your thread.
I have a hard time believing that a cfl is causing heat stress.If it was touching the plant..then maybe,but im thinkin not.
Set your PPM at 400 and your PH at 5.8,Do not over-water,Use your finger to feel if the vermiculite is wet/cold if it is..dont water yet.Root's need the medium a lil dry sometime's too encourage growth,mostly during the night cycle.
Dive:stoned:
^^^ IMHO...much better. :thumbsup: