Growing tomatoes from seed under lights and they look very healthy except for white touches on the tips of some leaves.
Sorry cannot supply picture, but wonder if this could be from too much water. Thank you for any help.
What kind of lights are you using, and how far are the leaves from the lights?
White tissue changes are usually from over-exposure or heat. Most likely source indoors is your lights. As already asked, what type of lights and how close? And normally recommended is a fan as well to reduce air temps.