no clue about the generic shit, probably is the same but i will stick with my MOAB, be careful tho, MOAB WILL burn ur ladies if not used properly. READ THE DIRECTIONS and reduce your nutes until u know how ur girls take the heat.
If you look at the NPK 0-52-32 thats straight out of the bag MKP (Mono Potassium Phosphate) The stuff I get is
MKP 0-51.5-34 which I sell to aquarium guys and some of my normal customers.