look at the feed guides on the advanced site, decide which one suits you, mix your feed according to their ratios, then........ measure the strength of the feed, its way to strong yes .... water it down to the desired level for whatever week your in. dont go for heavy or medium feeding .. your plants will just burn, and produce less bud.
all the guys i know with the strongest best results ie around the 1gpw mark, use a very light feeding program what peaks at max 1.8ec
personally, i use the 3 part gmb light feed guide, but peak at 1.7 eec.
just 3 plants give me .86gpw 1st try in dwc, .76 and .84 respectively 1st and 2nd attempt in canna pro+ soil
i havnt tried sog method for years (for legal reasons) but would yield more certainly with that method.
test your tank daily, the ec, ppm level should always be falling, .1 .2, if it isnt your feeding to heavy.