I think first step should be to find out why your pH is low.
If it's low because your alkalinity is low then yes, raising it with buffers/baking soda etc. will help.
If your alkalinity is spot on but your pH is low because of CO2 then you can try a few things (and I have tried them all lol):
* run a hose from your skimmers air intake outside (make the hole in the window screen very tiny and fill the gap in the window with foam -otherwise significant others may frown on wasting a/c and electricity like that). This works so so and I don't use carbon or anything.
* get a CO2 scrubber. This works very well but you may go broke buying the scrubber media
* drip with kalkwasser when your pH drops below your threshold. (figure out what your threshold is -especially if you use stuff like a calcium reactor you may be fine with a pH of 7.8 - do an online search on low pH - Randy Holmes Farley has a great article on this

First things first though: check your alkalinity first and adjust accordingly. Don't just dump stuff in there without testing... ;)