Fox farm's, three girlfriends(open sasame, beastie,chiching), need advice

so i am thinking on using fox farm open saseme, beastie blooom and chiching. But what should i use together with them?? i heard if i use them i dont need boost at all? what do i use and should i or not use boost? and i use these girlfriends once a week only?

The first ff trio is basic nutrients they are grow big, big bloom and tiger bloom. They are first nutrients, the ones you mentioned are on top of these basic nutrients for bigger denser buds