They both read the same exact ph reading (the maximum 7.6) however this only read up to 7.6 so that is why I teated high range I already knew the general ph area I needed to check.
The PH difference isn't that much. Generally, you don't need to acclimatize for difference in PH as long as the TDS value is pretty close (within 50ppm). Osmotic shock (and temperature differences) is what you prevent with acclimatization.