Why do the 2 test strips say different?

Skylight

New member
I have a floater in our 12 x 36 intex pool, we run the pump almost 24-7 only off a few hours a day if that. The filter is clean and ph is fine. The liquid test strip shows there is 0 chlorine and the liquid chlorine test say's it's fine

What exactly does that mean and why does it show different and how do I know which one to believe?

The floater has 2 tablets at all times in it and it's still got half of both 2 that were in there and it's open to the 2nd hole
 
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