Week 3 proved to be very good, but I ran into a problem that a smell appeared. Therefore, I had to install a cooltube on the lamp in the grow box, and close all openings in the grow box so that there was an optimum temperature and there was no smell. The growth dynamics are good.
Your 1st week leaf discoloration may be due to too much nutrients or you're using super soil that already has fertilizer in it. If that's the case try not to add additional nutrients for a couple weeks and only use pH water to 6.5. Getting fertilizer directly on the leaves may also cause them to burn. I'm bad about that. Haha.
Looking good in week 2!
Keep it up!