I have a 20'x4' (9500 gallon) vinyl pool that I opened about a month ago. I have been adding 84 oz. a day of bleach to keep the chlorine up, due to 0=CYA, Ph=7.2, TA=80. Sunday I put in 4lbs of stabilizer from Wal-Mart (in a sock and massaged it all day). Monday some friends gave us a little...