Here is the typical pool store answer I've recieved:
"Can I just use Clorox™ instead of chlorine?
No. Clorox™ is not stabilized. Clorox™ has only a small amount of free chlorine. It also causes buildup of total available dissolved solids which causes cloudiness. "
I realize that Clorox is not stabilized (a benefit). What is the argument regarding free chlorine? Is it that Clorox is only 6% chlorine and not 10% or 12%? I've also been told that Clorox is mostly chlorimine, not chlorine. Isn't chlorimine a more stable version of chlorine that they use in drinking water now?