@Wizude, and further!!!
Download the light meter app on your phone!!!
Albeit with errors and inaccuracies = but you can literally measure the power level of the supplied light = at one point (and throughout the box) By moving the phone back and forth with the luxmeter application! Also read - how many lumens your plant needs at the vegetative stage! You minimize the risks!
I see something went wrong with your plant = I think because of the lack of high humidity in the first week - just a plastic cup kept this humidity! But nothing! You seem to be swimming well.
like 1