If your plants are doing good then leave them alone. Don't be in a hurry to start adding supplements. I'd be careful to make sure not to overfeed. That Big Rootz is like a super soil. Lots of good stuff in it. Spendy but good. Good Luck!
SOIL AMENDING INGREDIENTS:
Peat moss, Triple Washed Coir, Clean Sourced Compost , Worm Castings, Ligna Peat, Pumice, Seabird Guano, Langbiente, Feather Meal, Kelp Meal, Ferrous Sulfate, Green Sand, Bat Guano, Dolomite (as pH adjuster), Volcanic Ash, Fish Bone Meal, Neem Meal, Glacial Rock Dust, Rock Phosphate, Sulfate of Potash, Humic Acid, Blood Meal, Oyster Shell (as pH adjuster).