Great, thank you for the feedback Dave.

Two follow up questions. As far as staining with Nature2, does that affect liner pools only, or gunite as well (especially with pebbletec finish)? The way it was explained to me, is that you use the mineral systems in conjuction to chlorine, except that you can now keep the chlorine levels lower.

Also, is there a big difference between chlorine and bromine? Which one is better for gunite pool?

Thanks.