Quote Originally Posted by waterbear
You must make your pool store very happy by using lithium. It is the MOST EXPENSIVE form of unstablizied chlorine and it is only about 35% availabe chlorine. It's primary advantage is that is is very fast dissolving
The fast dissolving is why I went to the lithium. In my first season I used the stuff from the pool store to shock the pool. I did it improperly and bleached out the liner a bit. As far as cost, I don't use much. I think 25 lbs lasts at least 1 season, maybe 2.
In any case I will look for the rainbow and will consider both the floaters and using bleach. My main objection to bleach has been my fear of harming the liner more. Thanks for the help.