how i see fox farm is as universal nutes, meaning they can be used for food herbs house hold plants whatever, but two products built just for cannabis is AN products aka Advanced Nutes and a humbolt line but i use the AN sensigrow a&b for my growth stage and they have a couple others to go with it for veg and for flowering i use sensibloom a&b as my base and for wks 1&2 bud blood+bud candy, wks 3&4 big bud+bud candy, wks 4&5 Overdrive+budcandy and wk 7&8 FLUSH dont use just water u have to have a base nute sensigrow and sensibloom are the base and the rest is extras but atleats have a base to start and buy the rest as u can but only add the nutes to the desired week but if u r just using water make sure u introduce the nutes at 1/4 mix first than 1/2 than 3/4 and than full mix or u could shock them from the nutes burn. i would go sensi they have everything and its created just for cannabis dont get fox farm and mix with AN products like bud candy stick with the one line dont mix it up. but feed those things!
