Weird fold in seedling leaves.

Mathew95

Active Member
Wondering if anyone has seen this before / knows what would be the cause. 4 out of 9 of my seedlings have this weird fold on one of their leaves. They all only have the one fold on one side. Everything else seems like it is going just fine and I’m not too concerned but was wondering if anyone has an explanation for this / has seen it before?
 

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