Age-2.5 week’s
Temperature-25day 15-20night
Nutrition-sensi grow
a+b 1ml/L
Soil is a local premade mix and
have slow release fertilizer in it
Ph- is about 6-6.5(soil ph is good I think..because the water runoff after watering is the same 6-6.5ph
Could be a little nute burn. Possibly wind burn if you have a fan directly on it. I would be willing to be that it doesn't get much worse and she grows out of it. Unfortunately, you have an odd lighting setup so I can comment on any issues you may have there.