more specifically they are to be mixed for either need. but i think they make it so you have to get both. so you just change the mix as you need it. so you can use it for both.
k yes you use A and b together and for veg you will need to get sensi A
not to change the direction but the G/m/b is easyer and works great.
the con is pricey and would like to know how your results are!! but
ive been told by the local shop to use sensi as a supliment. also on there
website they have a nute calculator to custom build what you need