b i have seen really good reslutes with a 1-3-2 as homebrewer was suggeting a little higher p seems to do some magic or a phosphorus addtive like bat gauno or the ch-ching or monster bloom seems to really help in flower especaley late flower but some companys will use a -1-2-4 and suplment a high phosphorus for high potash and it works out pretty good anther thing you need to look at is a 5-5-5 fertlizer is the same as a 10-10-10 or a 20-20-20 its the same /// some fertlizer ive tryed seen work really well are Fox farm , General hydroponics , Dyna Grow , botanicare , Cutting edge , Bc, dutch masters all worked well and all had there pro's and cons im now ganna try AN new 3 part seen how that works out But the hunt for the perfect npk can drive a man mad i belevle that one npk might not be perfect for all stages of flower that through out the plants life the chemical need of the plant change to grow flower than to grow friut are two deffent things and in flower cell are divinding and in fruiting cells are enlarging im still working on the need of the plant during these times but idont thing simpley increasing the Tds as plants get bigger is really cutting it you know