subbed for science, would love to know what this is as well.
Possibly watering too much? Soil looks super saturated is why I ask
Your plants look fine bro, don't sweat it, and yes, be careful not to over do it with the water and nutes. Good luck!
Peace
BM
Is there any way to edit posts on this board? was going to write Pieces because she got chopped up, now it looks so incredibly stupid