I'm starting my first auto seed grow and had a few questions. I'm gonna use Botanicare ReadyGro aeration mix and humboldt oneness nutes. I guess its a base nutes. I have never used either and wondered if anybody could help me out with the feeding? I don't want to kill them right off the bat. Also i am using a 400 watt dimmable light to grow them. Can i start the seeds out at 50% power without hurting them?