• Do NOT use algaecide, especially from Walmart. It will make things worse, not better. Even polyquat -- which we sometimes recommend -- would NOT speed this up.
  • Use borax -- 20 Mule Team borax -- to raise your pH to around 7.6. Add 1/2 box at a time -- slowly, to the skimmer, pump on -- wait 4 hours, and retest.
  • Buy 10 gallons of PLAIN 6% (check the %) household bleach. Add 2 gallons immediately, and 2 more tonight.
  • Buy a cheap OTO (yellow drops) test kit. If you go to Walmart, they may have the HTH 6-way DROPS kit -- it's an excellent starter kit. Get if if you can. 'Guess-strips' are NOT an acceptable substitute.