1st grow 4 different strains AUTO

I’m here to learn so I would love to hear from everybody and get there opinions on things. I just want to soak up the knowledge. I have a heater in there to control the temp but I moved the light schedule from 18 to 20. The basement stays pretty cool. I run a humidifier in there as well and just keep checking to make sure it doesn’t get out of control. It usually hovered between 40-55. I started germination I did two in paper towel method and two directly in the dirt. All four popped up around the same time. It took about two days germinate. I’m using fox farms ocean forest soil in 3gal pots. I plan on using mega crop as a nutrient after about 3 weeks. I have sweet candy and bud explosion but I’m not sure if I will add them.