Quote Originally Posted by MattinAZ View Post
Hi

I have a 10,000 gal inground fresh water pool. Purex Clean and Clear 320 Cartridge type filter. 1 hp pump, also a connected (discharges to the pool) 1000 gal spa. Pump runs 8 hours a day , since I am in Southern Arizona, it is hot and sometimes afternoon rains, I feel may be I should run it for longer periods

I want to buy new cartridges for the filter
Here's what you want
Unicel C-7470 Replacement Filter Cartridge Clean and Clear Plus
Filbur FC-1976
Pentair OEM R173573
Get one of these three -- a GENUINE "Unicel", "Filbur" or Pentair OEM cartridge, and NOT anything else. Currently, my preference is for the Unicel, but the current (Aug 5, 2014) Filbur price on Amazon is a terrific deal. Watch out for the Pentair -- the Amazon description is all messed up, and they may not be shipping the correct item. By the way, either Unicel or Filbur MAKE most of the OEM cartridges for Hayward, Jandy, and Pentair.

Yesterday I took a sample of the water and took it to Walmart as they now have an HTH machine which tests the strip that you dip in your sample. And my test results are ;

Free Chlorine 0 ppm
Alkalinity 80 ppm
pH 7.8
Hardness 800 ppm
CYA 200 ppm
I'd love it if, once you have a K2006, you could compare the results from the K2006 with the Walmart strip reader.