any ideas on what these brighter (yellow) marks are on my plant.?

[TheGreenGroomer]

Currently in week 3 veg day 1
INDOOR full ac infinity 3x3 kit
5 gallon pot
70/30 coco perlite
synthetic nutrients
day temps - 21°C-25°C - night temps - 18°C-21°C
humidity - RH - high 70
vpd - daytime - 0.9kpa - 1.2kpa / night time - 0.7kpa - 0.8kpa
ph feed 5.8
ph run off 6.2
Feeding PPM - 360
PPM Hannah of run off - 303ppms

she was amazingly healthy all the way to end of week 3 veg when she started to show me these brighter spots????

 

[Riggsy]

So let me start with I know nothing. I’m literally on my first grow.

But I have read that the curling of the serrations and that yellowing blister kinda looking thing is typically light burn/stress. How high is your light and at what intensity?

 

[TheGreenGroomer]

So let me start with I know nothing. I’m literally on my first grow.

But I have read that the curling of the serrations and that yellowing blister kinda looking thing is typically light burn/stress. How high is your light and at what intensity?

i dont think it is due to lightburn as other leaves closer to the light are not effected by this problem
plus i am using the photone app and i have a reading of 500ppfd at canopy

edit : but on that note ill slightly lower it and see how she goes tomorrow day i guess whilst i wait for more advice