We are new owners of an in-ground pool with a cartridge filter and chlorine system. We've had the pool for 2 weeks and cannot get the water balanced correctly. Below are the most current test results:

Free chlorine: 0.0 ppm
Total chlorine: 0.0 ppm
Combined chlorine: 0.0 ppm
pH: 7.0
Hardness: 100 ppm
Alkalinity: 95 ppm
Cyanuric acid: 0 ppm
Volume of water: 23,640 gallons.

We have gotten so much conflicting information that we are very confused. We are constantly adding muriatic acid to get the pH up. We can't seem to get the chlorine right. Any help would be appreciated!

Thanks,

Jose