First grow sour tangie

So this is the second week , looks like i'm perfectly on schedual. The roots start coming out off the bottem on multiple spots. Just started with the lamp 20hour on 4 hours off, at night my temperature dips to 15 degrees so i will have to fix that cause it's a lithel bith to low for my liking. Just gave it water for the first time since planting, with 1ml/l power roots . When the soil dries up egain i will be transferring them to my 5l airrootpots. Day12 just gave them some vita race from plagron Hoping it keeps growing like this realy happy i din't kill it yet :) . Greetings Bawzs