A local supermarket - Tom Thumb - has carried the AquaChem brand and really been the only source for this the last few years, but they're not selling it anymore. It's not sold at Home Depot or Lowe's, and I don't see it at Pool stores, either. I can find the other algaecides that have metals, etc.

I'm in the Dallas area. I would think that I could find it somewhere.

I've seen this on In The Swim - the chemicals are not listed so I don't know for sure:

http://www.intheswim.com/Pool-Chemic...ecide-60-Plus/