Chemical differences (I am new)

Dillonger

New member
Jun 18, 2023
1
Nevada
Hello! I am just getting in to managing my parents and grandparents pool, but I am getting different results for my chemicals than the pool store. Here is my numbers
ph 7.5
Free chlorine 10
Alkalinity 80
Calcium hardness 500
Cyanuric acid 80

Leslie pools numbers
Ph 7.2
Free chlorine 9.11
alkalinity 44
Calcium harness 303
Cyanuric acid 117

Is there a reason that my test kit and Leslie’s pools give me different numbers? Maybe my kit chemicals are bad or the store is just lying to get me to buy their products? I appreciate any help I can get. :)
 
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