Just a quick question, I seen some of you talking about running bleach in your pool at first...(when you open it) I have a underground pool with a vinyl liner,.. will bleach hurt it??.. Sorry if thats a dumb question,.. but I was looking at running something in the pool while i am waiting for my other pool stuff toget here and bleach sounds like a good idea, but don't want to do it if its going to hurt my liner. I haven't opened the pool for 2 years.. so this is going to be fun to see what I find when I take the cover off this year.