Day 8-14! (4 Days germination phase)
Light 20/4 hours (VIPARSPECTRA P1000)
9x 7L Pot (20x20x25)
60×60x140 growbox
100mm/250m3h exhaust system circulating air 1x Clipfan /15cm 5W
watering per 2 day 200-400 milliliters temperature 77-84,2 °F/25-29 °C
I’d gap out your waterings a little more. The chicken clawing and the rusty marks on the leaves commonly means the fine root hairs that absorb your nutrients are rotting from too much moisture in the soil not enough oxygen. Also helpful to add more aeration to your soil like perlite or rice hulls