Phosphoload?

So im pretty new to the grow scence, and i recently came across a product called phosphoload to do exactly what i want it to do, but before i buy some i do a little more research and find out that this stuff give you cancer...fuck... so i dont want to use it as well as the other ones, i.e. Bushmaster, Gravity etc. i was wondering if there was anything organic or chemical but not harmful that i could add to stop vertical growth, and divert all energy to producing monster buds. Im using GH 3 part with a few additives and i was planning on following the koolbloom liquid and dry schedule. Also, is the liquid and dry koolbloom similar or not at all?? i was thinking of adding 1/4 strength dry, 3 weeks into flower for a boost, thx in advanced for the help??
 
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