Did you get your ph down?

Fox Farms has pretty-much all the nutrients you need in the Grow Big and the Tiger bloom. The Big Bloom is a form of nutrient tea providing some slow-release nutrients. Perhaps a benefit for crappy potting mixes, but I'm likely not going to purchase it (Big Bloom) any more. Instead, I use Grandma's blackstrap molasses. (unsulphured)

Plants don't do well when overdosing on sulphur. At least in soil grow where it can build-up.

Molasses contains calcium and magnesium. (and iorn) Strangely enough...CalMag and CalMag Plus claims the same nutrients, but costs 10 times more.