I have been thinking lately that the salt from using bleach, over time, may be considerable--at least enough to get some benefit from it.

This is my 5th year using only bleach, and every year my water seems to be easier on the skin. We just had a July 4th/husband's 40th birthday party--throughout the day, 40 people or so in and out of the pool, half of them children. Every adult commented on the look and feel of the water, and I never got around to my plan of adding salt! (Still waiting on Ben's new kit w/ salt test.)

I'm sure someone much more knowledgeable than me will come along with some numbers--just my anectdotal two cents.