Mimosa Cake Fastbuds

Hi there, Its my first grow ever but i‘m trying to do best as i can for my Babies. So Germination and day 1-6 went well. But at day 7 she started showing this curling at the first true leafs i guess. I think it could be because of hot temparatures and/Or Too much light. For about 10 hours the temperature was at about 80°f. My other guess would be the pH of the water. Cant control this yet but maybe i will get the thing to measure the pH. If anyone has an idea what causes those somehow symmetrical twisting leafs please let me know. (Banana purple punch and Purple Lemonade dont sho These signs, same tent and everything, growdiaries of These coming in a few minutes) Im here to learn from experienced growers or anybody so dont be shy to let me know your thoughts. Thanks a lot for stopping by! Have a nice day and dont forget, Its 420 somewhere ;)