Just noticed it today wasnt there yesterday.
What kind of light? How far away? What's the temperature and humidity?
Hydrofarm t5 with 8 bulbs, it's about 4 to 5 inches away. Just checked temp and humidity it was really warm today so that's why temps a little higher it's usually around 72 degrees.
I have the same light ,its very bright esp for seedlings I keep them about 18-24 inches away and no issues with stretch, if there well established I'll have it 36-40 inches away but I use very high output grow bulbs also
Ok I moved it up a few inches I'll see how they're doing tomorrow. If you notice the screwdriver it's the only one that had those spots on it and I somehow broke the poor girl trying to get a pic even though I was super gentle with her .