YYCGUY's Red Sea 500S

[yycguy]

Hanna P04 Ultra low question.
Just ran my Hanna P04 tester and got a reading of "0.00" that's ok as last was .04
Now just tried my Hanna Ultra Low P04 test for the first time and the reading was simply "5" in the far right side of the window. So what does that mean .005? I would have thought I should have seen a decimal place in there?
Only ran the test once as I only have the 6 reagents.