Babies are looking pretty good, but just in the last couple days, I've noticed some yellow fringing on the bigger leaves of one plant:

Attachment 290626

Should I worry? The other plant (same seed, identical conditions all around) isn't showing this. I thought it might be due to drying out a bit, but maybe not? Went 6 days without water, but the mix was still damp (and I'm still learning). Watered last night and used the same formula as before; 50% strength of the FF hydro nutes, pH balanced.
Token LaRoche Reviewed by Token LaRoche on . My turn - Stunted growth? Using coco, but this form seems more appropriate than the hydro form. What is your experience level? (first timer, novice, experienced...) Noob (first grow) Your Equipment: .1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) T5 Florescent 4-2ft tubes in fixture .2) Distance from tops? 4-6 inch .3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) built-in (fixture) .4) Is there a consistent fresh air supply? Maybe not -- it's in Rating: 5