Question About FF nutes??

I'm planning on useing Fox Farm Soil and nutes with my next grow. my question is,,,Do i need to use all three nutes, Grow Big, Big bloom, and Tiger bloom or can i just use the Grow Big for Vegg grow, then switch to the Tiger Bloom for flowering. It apeirs to me that Big bloom and Tiger bloom do the same thing, and i DONT want to over fert. again lijke my first grow with Miricale Grow and an all perp 20-20-20 fert. Plz leave detailed instruction if u know, i'm new to growing and fisrt grow has been alot of up's and down's with my baby's. I'm looking to do my next grow RIGHT!! and with the help of growers like u all i'm sure i'll do it better on my next grow, Thanks to all who reply!! PS. I'm useing a 400w HPS and also have a 400w MH conver. bulb, aqnd i'm going to use ph tester for water next grow.

just use the big bloom and grow big for veg. then in flowering use the Tiger and big bloom together. .... if you search the fox farm site it should give you a schedule on what and when to feed your plants