That stuff is bullshit.If you want to use some hormones either use "birthcontrol pills"1 pill 4 5 gallons of h2o....or......cut off some branches of a willow tree,boil some h2o.Put the water in a bigger bucket and soak the branches in it.The weeping willow tree has a natural hormone.This is why these trees grow like crazy.
I use both methods,but only during the flowering period.If u go w/bc pills, only do it once right, before it starts to flower.You'll be shocked how big your buds will get.If you use weeping willow water,stop using @ 1 month be4 harvest & as always try to flush your plants be4 harvest even if you grow outdoors.