[pogodzib]

So called "hobby" test kits are not very accurate and can be difficult to read so differences are expected. Hopefully your results aren't extremely different.

As for raising the alk, yes, I'd recommend dosing only the alk part for a while to get your system more balanced. If your calcium starts to drop too much, you may need to dose some calcium as well, but you should still dose in a larger quantity of the alk supplement.