Nutrient question

I have an autoflower in a 3 gallon pot indoors with 4 42w cfls, the bottom layer of the pot is lined with about 6" of very nutrient rich soil called recipe 420, got a bag of it online, and the rest of the pot is filled with basic organic soil and the rest is perlite. I was wondering if the bottom layer of recipe 420 will be enough food for the plant thru flowering or if i should still add some bloom nutes. Theres a picture of what the soil contains.

Nobody?

Just watch her. She will let you know when she is hungry.

I use soil with no nutes so I know exactly what goes in. But from what I have read, most rich soil do not get you through the whole grow.

Even with the short life of the auto? Flowering time for my skunk auto is 40-50 days so i cant really see her eating TOO much, but then again i could be surprised, thanks for the input, might just go out n grab some FF big bloom, i also have unsulphured molasses.