First Grow! (Zamnesia) Lemon Power Haze / OG Kush / Pink Rozay

My first grow! - Placed the 3 seeds in coco pellets and placed them in my small germ box on the fridge. (Temperature 19 - 21° C and humidity 75 - 95%) - After 2 days, I put them on the windowsill in winter, which led to a lengthy stem on the OG Kush. - After 4 days, 2 of them germinated, and I put them in my self-made cardboard box under my Viparspectra XS1500 on the lowest dim with a 40 cm distance to prevent more growth in length (temperature 21° C and humidity around 85%). - day 6: i might have f***ed it up by too mich humidity. Mold on Lemon Power Haze and pink rozay. OG Kush still growing in length even with grow light. Lemon Power Haze also seems to have some kind of sunburn (black stem - see Photos) Day 7 - No more top on the Mini Greenhouse. Trying to lower overall humidity and recover these three Ladies Your comments and suggestions are highly appreciated since I am a newbie. 😬