Www.jrpeters.com.
Search it, it has a very loyal following and many great threads and such
Most of us use the 5-12-26 and calcium nitrate and some use epsom.
321 is the ratio many use 3 parts jacks hydro, 2 parts calnite, 1 part epsom salt. I dont use that much epsom myself... some run same ratio all way from baby to chop day, others myself included cut down on the calnite mid flower as thats where most of the N comes from... no marketing w naked ladies, all dry so no purchasing someone elses tap water, its macro and micro and no nike swoosh symbol equivalent to pay the big bucks for...and works every bit as good as 16 mystery bottles with the smallest ones being the most expensive...
Im not saying other lines are bad... im just saying Jacks can keep right up with em for pennies on the dollar