Easybud first grow

hey there, that's not a sign of stress that's from the water collecting on the leaf then the light basically turning it into a magnifier/loupe which caused burning OR some mineral residue from water that's evaporated. Nothing to worry about but the damage wont disappear. Keep up the good work, it's fine what you're already doing. If you have worries about the humidity you can always spray the plant up to six times a day to maintain that. Hope this helps ! 🚀