Hi! Without essential data like pH and ppm of inflow/runoff it’s hard to guess. Maybe that’s just odd first leaves. The rest are looking great. Possibly pH issue, light overwatering or a bit hot soil (too high ppm). Not fungi or pests. I think there’s no issue here. She needs transplanting in few days. Why do you use 12/12 light schedule from seed for auto? Just curious 🧐