Here we have a difference of opinion. I use Dyna Grow mixed with Jacks, but I like their Liquid Grow 7-9-5 formula. I don't give nutes until the very end of the veg phase when you want to start elevating your P levels slightly anyway, and I feel that between the Liquid Grow and Jacks Classic Bloom Booster that your getting plenty of P and K during flowering. Supplement with a bit a of Jacks general purpose to keep the N levels up and everythings happy.
Riddle- what did Paulinos have to say about the Protk formula? Are they going to start carrying it, will they special order it, or will we just have to find someplace else that carries it?