I use Pro mix. I will use fox farms if I need to, but that's only if I have to and prefer Happy Frog to Ocean Forest. I will check out some of his stuff.Hey McDee, I've only used the Jacks in coco so far. Pretty easy with that, just fertigate everytime start to finish. I had no luck in soil so if you're going that route it may take a little tweaking. I think @Cave Dirt Cody runssoilwith jacks and his plants were monstrous. Although that's just his usual from what I can tell!
EDIT: I just looked and his most recent thread was a full hydro run with the Jacks.