Roots Organic Original - Nutrients?

[sixstring]

With a little more recon time, I believe I found the info I need.

What nutrients to add to Roots organic and when

I am new and any help would be great. I am growing autoflowers, in Roots organic in 3g fabric pots. When and what nutrient to add? They are just sprouting roots and one is a seedling. Is root stimulator recommended? When to add more? Any help would be appreciated. Peter