Just a quick note--brush your pool well to make sure that you don't have undissolved cal-hypo sitting on your liner, which will fade it. Cal-hypo is notorious for not dissolving well, and you don't want a bunch of it sitting on your pool floor. You might want to consider pre-dissolving it in a bucket of water and pouring it slowly into the return stream to help it dissipate better and to make sure you don't have clumps left.

Janet