Fat Banana (Auto)

On Day 01, I germinated 5 Fat Banana (Auto) in a Rockwool tube and put it in a propagation tray with a dome on it. With room temperature above 80'F and humidity above 90%. From Day 01 to Day 03, the temperature is around 85'F with humidity above 95%. The room temperature kept rising so I gave cool air in the room and removed the dome on Day 04. On Day 04, the temperature dropped sharply from 85'F to 70'F. Humidity also dropped from 95% to 50%. To avoid the being too cold, I increased the temperature of cool air. I gave cool air from 6 A.M to 12 P.M. The temperature has been steady around 75'F and humidity 55% on Day 05, Day 06, Day 07. On day 07, 4 seeds produced 4 leaves each and showed promising. So, I transferred into air pot. I used the growing soil from Superbud - Super Living Soil. I used 1 soil bag per 2 air pots. Throughout the whole germination process, I used no nutrients and only used water to soak the rockwools. As for light, I gave >1500 lumen on Day 04 >7000 lumen on Day 05 >10000 lumen on Day 06 >12000 lumen on Day 03 This is my very first time growing cannabis so let me know your thoughts about how I should improved my germination methods.