companies specifically tailor their nutrient formulas to a specific stage of plant development (veg, bloom, etc); this tailoring is done by manipulating the relative concentration of the macronutrients and sometimes which nutrients
are even present in the formula (i.e. not all micronutrients are essential throughout a plant's entire lifecycle).
I have used FoxFarm on occasion and recall they tailor their bloom additives by both manipulating the concentration of the macronutrients and presence of micronutrients. Since you already have flowering plants sharing a reservoir with non-flowering plants, I would recommend deviating from the FoxFarm feeding schedule (they assume you are growing a uniform crop) and use a blend of nutrients for each stage (i.e. veg and bloom). Think of it like this - you will be giving the plants a balanced, complete meal from which they can pick and choose what to eat.
One cautionary note: the blooming additives of FoxFarm are mucho potente (e.g. 0-50-30). I would cutback the recommended amount and dilute it down so that you don't get NPK overkill (in this case: PK overkill). My one criticism of their products is the phosphorus levels are simply out of proportion with what plants really need.