Gravity by humboldt

Hey all been doing some research on Humboldts gravity finisher.Was wondering if anyone knows about it.Says apply once or twice at three weeks to go.Do you lower nutes by a third with it or after it?Better to keep the nutes low,gona try different ways like using with no nutes after and start flushing,am wondering if kool bloom powder day after at about 800 ppm would work,had some responce about gravity as a stand alone last two weeks also.will try em all and keep posting,but any help would be great,do wana kill such pretty girls if i dont have too

I dont know but i want to know to ,and just to let u know even tho its not that relative i used purple maxx and liked it alot and i feed my plant heavy doses of it and it was fine i wish i got gravity too

i will let you know,from most of what i under stand its not to different from purpple max but havnt tried that either