Help... on PH

[ecam]

I got a salifert kit from Nicki (Thanks!!!!) The reading on it show that the PH is between 8.0 and 8.3


The 2 API kits I have are showing the PH at 7.4....

The Alk is about 161.1 or 9 dKh

I just calibrated my refractometer (thanks WIll and NIcki) and the salinity is at 35ppm (1.0264)

Not sure what to do about the PH. Should I throw out my APIs and trust the Salifert?

Thanks for the help

 

[downbeach]

I
Not sure what to do about the PH. Should I throw out my APIs and trust the Salifert?

Yes