If you are already using salts, why spend extra money on something you already have...
1 serving of AN Overdrive = 1 extra serving of (AN ph perfect, GH Flora) Bloom + 1 extra serving of 1/2 teaspoon of Epsom Salt.
1 serving of GH KoolBloom = 2 extra serving of (AN ph perfect, GH Flora) Bloom + 1 extra serving of 3/4 teaspoon of Epsom Salt.
Anyway... a very well known old school farmer fact... feed your flowering / fruiting plants lots of magnesium sulfate in mid to late bloom for plumper, juicier, and sweeter tasting fruits and vegetables!