i grow in dirt that has plenty of bat poop in it
but a little more could never hurt. ive never used sweet, i just assumed it was AN. but they sold both an and botanicare. so it makes sense.
as far as not using sweet during the flush, i dont know why youd avoid it. many people use molasses during flush, or the first week at least. and sweet is mainly molasses {read the label, first ingriedent is cane sugar} cane sugar is just sugar that hasnt had the molasses cleaned off it yet. of course there are probably a couple other things in there. but from what i can tell sweet is no worse to use than molasses during flush.
i do want to try final phase one time just to see if it makes a difference. there are those who swear by it.
i agree a pro will get good results with anything. but being a newb i found AN easier to use and better documented than GH stuff, though i did use gh's kool bloom which worked great and made a helluva difference.
no one can prove you are growing weed based on what nute you buy. worrying about that is ridiculous. you are in a hydro store you will be labeled as a pot grower. its pretty simple really. no one is going to spend the money we do to grow 2 dollars worth of tomatoes