If you only use organics you can just keep reusing it, or even do no-till and not have to mess with it again except for top dressing occasionally. I've been using the same FFOF for 5-6 rounds, but now it's been turned into no-till. I couldn't imagine buying new soil every time. That would get expensive.Currently using pro mix hp. What else can I use for a better bang for my buck? I Need a lot. THanks for your time.