Vanhout,

I remember reading on this forum last year that HTH had discontinued this product. However, last year I was able to buy it online. This year, the 68% type is also on clearance at www.poolsupplies.com $49.99 for 23.5 pounds. I've decided to skip it this year and rely 100% on the bleach. We'll see how that goes.

By the way, it's called HTH Duration Capsules.

Alex