Sure, BBP is a specialized foliar. It was not designed as a ‘nutrient’.
You are invited to use any nutrient line or growing medium you choose…the better your nutrient program,
the better your results.
I believe you can now see why so little is required. Although I always give my dilution ratios in Xml/8 oz water you can extrapolate (i.e… 2ml/8 oz= 1ml/4 oz= .5ml/2 oz.) You only need mix what will be required to treat your existing foliage at the time…