yes you can easilly make up your own stuff, a lot of these products are like snake oil, and theres a bit of the emperors new clothes syndrome in there, you know what i meed, you pay £20 for some secret additive, you are struggling to see if it has made any real difference, but you convince yourselves that it has because if it hasnt you feel a twat for wasting £20.
then theres they guy who starts using the latest wonder additive, you ask him if it works, "sure does" he tells you but he forgot to mention that he's just swapped a 400hps for a 600, you know what i mean. theres lots of sharks out there after your £, not just in the weedworld but other shit, i fish and the number of secret bait additives is nowadays mind boggling, like women and secret anti-ageing creams, diets??????????? just eat less, there wernt many fat guys in those camps in the balkans, bosnia etc was there. just think about things, befor you spew your cash on a molasses or some other straitforward ingredient pretending to bea speciall additive.
anyway good luck.