Best nutrients for auto??

I have 2 auto flowers growing at the moment 1 trans Siberian she is about 12 days old from sprouting out of the soil and also I have 1 northern lights big bud cross that sprouted today.

I began giving the Transsiberian 1/2 strength floraduo series nutrients 2 feedings ago. last watering was strictly pHed water.

When should I start adding bloom nutes? Which ones would you suggest? and how low can this HPS be to my baby the cool tube is cool to the touch I blow air conditioned air through the fixture

As an auto. you really don't need any of that crap...she ain't with you longer than 10-12 weeks, but should you want that nice metallic crunch to your smoke go ahead

so the planet isn't gonna want any kind of extra nutes cause it's an auto? ok I will see how they ended up liking the half strength and pHed water schedule

You can Feed autos, Don't go above 800ppm for veg. I would focus on bud enhancers like big bud & sweeteners like FloraNectar & bud candy during flower with maybe 1/2 nutes of bloom. But know the length of flower time and flush the last week or so if you want to.
Flushing is a preference, I flushed once and didn't notice a difference.