I started using Walmart bleach after coming across this forum, and am wondering what the 91.75% "other ingredients" are. I assume the major one is water, but it says ingredients plural so there must be some other stuff that I probably would rather not have in the pool.

I'm a relatively new pool owner, didn't know a thing about pools before a year ago, but quickly discovered the previous pool maintener (a "service") had been using dichlor tablets forever and the CYA level was _way_ high, finally got it down to 100 and have been using only bleach. Water is very clear, no problems with it so far.

Another thing - there's a buildup of white stuff right above the water line, not any below the line. How to get rid of it? Any cleaner would run down into the water. Is it OK to just try brushing it off, assuming it would then be filtered out? The local water here is extremely hard, the hardness test of the pool water is at the upper limit of the scale.