I switched nuets about half way through veg on my current grow i was using gen hyp before that and i noticed a big difference right away in just the general health of my girls.. They turned a MUCH healthier looking green and started growing at a much faster rate lol.. But never tried FF so i dont know if it would be the same for you or not.. But so far NO complaints with them.. Im using the 3 part Grow Micro Bloom and Big Bud as a sup. Ill take some new pics tomorrow for ya Your girls look awesome i would stick with what your using now.. If its not broke dont fix it lol