600W LED 1st time Auto grow

I didnt take many pictures for the first few days as i had a couple of issues that i wanted to monitor as you can see i had a mutant plant i also had a runt and 1 with variegation and 2 perfect little seedings which were the first 2 out. TEMPS:26-28c HUMIDITY:50-70% WATER:6.5ph no added nutrients. PREPARING THE SOIL:For the soil i decided to go with canna terra pro+ which comes with a light pre mix of nutrients in the soil already. I have always used 15ltr pots in my grows so i went with the same for this grow(and because for future grows i plan much bigger auto strains). i realize for this grow that these seeds are a medium sized plant so i cut the volume of the pot down to around 12ltr by not filling the pot to the top and also i added 2-3" of clay pebbles in the bottom of the pot for drainage and to act as a good source of air pruning for the roots down at the bottom.i mixed a small ratio of pebbles with the soil to provide good drainage and aeration and filled the pots to the first line below the rim. I flushed the soil with ph 6.5 tap water till water was just coming out of the bottom of the pots. I then left the pots under the lights for 3 hours to allow them to dry out slightly and also to raise some humidity in the room. PANTING THE SEED:Seeds were all planted on the 10/10 1-2cm under the soil in the center(ish) of the pots at this point i turned out the lights and kept the temps around 25c and the humidity was around 60%. DAY 1:11/10...2 of the seeds had popped the soil and were already showing good tall stature for such young seedlings. The next day 12/10 the other 3 had popped the soil so i switched on the lights.