Week 3 - white spots on my plant

hello,

Since week 2 I have spotted white spots on my plant , it is indoor , here are some details :

Some details ; Week 3
Strain : THINK DIFFERENT AUTO
600 Watts Led Grow Light
Custom 60cm x 60cm grow box
12 cm extractor

Does it have a problem ? Ligths are on 18 hr a day

spider mites ???????? maybe / chemical burn ???? get your self an eye piece off ebay

Kinda looks like you spilled something on her.

Light burn? What is your distance? 600w on babies is a bit rough.

Have you checked for pests?...