you can use the stuff from garden stores but they are crap and your finished product will be crap.the stuff they sell in garden stores are mainly for roses,different type of flowers and so on.read the threads here and no one will say they got really good weed using miracle grow or whatever.there is a reason people use nutes from hydro stores.Now if you dont have access to a hydro store than you dont have a choice.But if you do have a choice go to a hydro store and also read and keep reading these forums good luck....
My first grow was in soil and I used miracle grow fertilizer (before they started putting those time release ferts) and I got really good results. The smoke was more intense than most weed we had all smoked before, but then again the seeds we got were from this "crack" weed bag we smoked. Who knows, but eitherway, I think results wont be bad, they just wont be cup champions. But Ill check out the hydro store for prices and figure it out from there. Thanks man!
Well you might get away with miracle grow in soil, but I wouldn't try it with hydro. I recommend that you get nutes that are specifically made for hydroponic growing.