I did the math, I would have to use almost twice as much AFR to get the same as Balling. There is a whole thread about people switching over here I think. We will see. In a year it might be another story.Well, right now you technically just need water changes. But if you go to AFR when you start getting corals, If you buy the 1600g, which would be over a year supply. That would be about than $6 a month. AFR is like balling but better... it's Balling with table service... < Baller Joke....