I'd be tempted myself to use the bloom ab only. But honestly it's your call.ill be feeding that at 800-900 ppm and PH 5.5 (to get my medium back down a bit into the 6.0 range) after a good flush today;
i swapped out my VegB food for BloomB to increase my Phos #'s.
I used to run the CNS-17 Bloom from start to finish with a NPK of 2-2-3.I'd be tempted myself to use the bloom ab only. But honestly it's your call.
Good luck op