Looking for some new nutrients products. free samples packs?.

hello,

I AM CURRENTLY LOOKING INTO SWITCHING TO FOX FARM PRODUCT BUT I WAS WONDERING IF THEY HAVE ANY FREE SAMPLES I CAN GET,BECAUSE RIGHT NOW I AM USING SOME TYPE OF NUTRIENTS IN THESE BOTTLES HE GAVE ME WITHOUT ANY LABELS.AND I'M GROWING O.G.p..but my plants don't seem to be growing like their supposed to be can anyone help me....