My chlorine levels are off the charts because I slammed the pool and was wondering how to check the chlorine since it is reading above 10? My water is cloudy atm but I think I am on the right track now due to gray sand looking debris at the bottom of my pool that I vacuumed out yesterday. I never got that before so I think I slammed it correctly this time. I also bought a proper test kit! Taylor Technologies K-2005 - DPD Complete Chlorine Kit that I can test for everything.