Estípulas tiene una punta marrón seca

Hello, thanks for the response, you put me at ease. The 2 lemon pies showed these "burns." I had the HLG V2 at 42cm for the vigorous growth of the last few days. I was thinking it was a light burn but feared it might be a fungus because I sprayed some insect repellent to keep calm during the flowering phase from pest or fungus infestations.. I did it before the last leaves opened and formed the pre-flowering. I've always done this action before flowering and was worried that with the misting this time the humidity might have concentrated at that point and generated a fungus.. thanks for the help, I'm practically at the beginning and I've never burned the girls with lights.

iits a light burn. nothing to worry