Did your pool store use the 'disappearing black dot' test to test for CYA? If I were you, I'd trust my own CYA results. We typically suggest a CYA reading of 40-50ppm for most pools.

You can force your test kit to read higher than 5 with a dilution method described here: Testing Without a Good Kit


We don't advise people to use the Frog Mineral system. Those mineral systems add metals to the water -- specifically copper. Contrary to popular belief, it isn't chlorine that stains pool surfaces, fingernails and blonde hair green. It is copper! You do NOT want copper in your pool. Do yourself a favor and ditch the cartridge.

What are the ingredients of the bags of shock you bought?

Go ahead and order a good kit -- Taylor K2006. It will make your pool maintenance much easier.