where is the best place to buy Polyquat 60%. My chlorine is still high because I am putting bleach in it everyday and nothing else. My water is not clear but see thru cloudy. I can see the vacuum head in the bottom in the deep end but not good. My ph finally went to around 6 today. Should I now be trying keep my ph up? By the way how long does test kit tablets sealed in alum stay good?