Find a neutral soil, sow seeds and plant clones in it, get a 1gal pot, mix up the Rainbow Mix Grow in it as per their guidelines (i think 1-4 heaping tbl per gal of soil) and fill that 1gal pot with your just mixed soil. Then all you do is transplant clone/seed into that 1gal enriched soil container and give it just water for its veg period (3-4 weeks until completely root bound) Then do the same but with a 3gal container and Rainbow Mix Bloom when you go to 12/12. Just PH adjusted water for the whole thing (use Earth Juice up and down, its organic ).
THATS HOW TO USE RAINBOW MIX, i get just as good yields doing this as i did with all the fox farm nutes, plus some things from Botanicare.
KISS- Keep It Simple Stoner