60x60 Critical SoG (first grow)

First week of my first grow. So do not follow my mistakes but please comment! Let’s go! I soaked the seeds in a glas of water for 10h.(until the seeds drop to the bottom of the cup) After that i have placed them in a papertowel and waited till the roots come out (about 24h) I have planted the seeds in 6L plastic pots witha complete coco light mix (no furtelisers) LED was at 40cm from the plants. They sprouted after 32h. The seedlings which were placed in the corners of the tent, grown realy high and „leggy” stems. The NEWBIE-me thought: „They have not enought light!!!!” So I’ve put them another 60W LED panel in the tent so.. Temperatures went CRAZY reaching almost 40 Celcius! Results? Leaves turned a bit yellow and the edge curled up.. (Fotos) I have removed the second LED panel to lower the temps and I placed the 140W LED around 33CM from the plants This was a another mistake. The plants in the center grew very fast, very big. The leaves were a bit discoloured and curled. The other plants are quite smaller. Now I have my LED at 55CM, seems to be a lot better and cover the corners of the tent with light well.. (Stupid me🤦‍♂️) I have fed them nutrients one week after germination.