Jacks is the old Peters line, right? Nothing wrong with it, but I prefer the flexibility of the FF line, and have found nothing that does better. I always recommend keeping it simple and cheap, and have nothing against Peters, or Jacks or Miracle Grow, but saying any one of those products is better than FF is folly. At best I'd say...perhaps as good.

Granted, I'm not a commercial grower, but I do demand the best from my ladies, and FF fits the bill. If you're happy with your Jacks, great. But I'm not buying into the Jacks is better theory.

Regardless, I'm not a big fan of using soluable nutrients. For Ambers roses sure. (Amber is my wife) For our meds, no thank you.

gravila: Regardless of the product you chose, you'll have a learning curve.