greenAFanswered grow question a year ago I made the jump to jacks 321 from FF and couldn't be happier, I use a couple other products also triple super phosphate (veg) and MKP (flower) but they certainly not needed. I get outstanding results and the price is great. I make 100:1 concentrate of the different parts and fill a milk jug, so it's as easy as using liquid nutes 1 part this 1 part that to the EC value I need. They also have the greatest support I have yet to come across. They are so helpful and go above and beyond compared to any other company I have seen. I can't see switching to anything else, if a company send me their stuff I would try it but they have some big shoes to fill