fox farm nutes questions

k im using ffof and got 11 plants started going on there 2nd week i got ff grow big and ff big bloom i know the soil it self has nutes in it but when should i start using the other two nutes??? according to ff sites feeding schedule i should be using big bloom right now and then in a few more days start using grow big.....that true???? and can you use both nutes at the same time??? and if you can can they be mixed in one gallon???? thanks for anyone that responds!! pic one is the oldest inch half tall goin on its second node i do believe

i would definately not use nutes right now. way to soon. too risky to kill them from over doing it.
according to fox farms you should be using big bloom right now??? no no. use that once you start flowering in the 12/12 cycle.
i would wait till the plants are at least a foot tall (generally) then use grow big at 1/4 strength. id actually start a bit less then 1/4 strength just to be safe

thanks for the input bud!! do you use any of ff products?? if so what?? if not what do you use?? happy growin bud