Jacks is complete (it's a two part, use Calcium Nitrate with it), flexible for playing with your ratios, and CHEAP when compared to anything that comes in a bottle. A 25lb sack of Jacks is $45, and a 50lb bag of Cal-Ni ran me just $32. A full changeout of a 100 gallon RDWC setup costs me about $1.50. Because I'm trying to kick up the flavor and aroma, I add some epsom salts, aka MgSO4- get that in the pharmacy section of any grocery store. A little
Superthrive for B-1 and that's the sauce.
I screwed up my first run with the stuff and ran less than half the ppms I should have, and they still came out okay...
Available nutrients are available nutrients. There's no mystery- in spite of how hard they try to create some- and the more you learn about your nutes, the more pissed off you'll get that you've spent all that money on bottles with fancy labels.