It doesn't look to bad I think the leave is damaged from the seed and/or maybe the high temps combined with humidity. Do you use any nutrients? Any info on the ph? That said I am on my first grow right now as well. Had yellow leaves from getting nutrients onto them whilst watering. Checked for ages till I realized. Its a learning progress heads up and keep at it I am sure you can turn her around. Just check if the new growth looks healthy
Good luck
TDS
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