Before discovering this site, I use to maintain CH at about 250-300 by adding calcium flakes and/or cal-hypo if I was shocking the pool. Since I always had to add calcium to keep it at the desired levels, I assume that my fill water isn't adding a significant amount. It's been about 3 years since I've added any calcium. Last season I checked the CH level and it was about 200.

The Purple Stuff works very well preventing stains in my pool . I usually only have to add half the recommended weekly maintenance dose to remain stain free. I'm thinking with the higher concentration Pink Stuff I could probably use even less.

I will be closing the pool pretty soon, so trying the Pink Stuff will have to wait until next season (I can't believe the season is ending already! ).

Hmmm...maybe I can attach CuLator bags to my swimsuit and remove metals while swimming.