I have the same ph meter bud, I bought it in part because of the probe option so im interested in this. I wouldnt do daily, and certainly if you think there is an issue. I never checked it before unless I had a problem, but if I had the probe I would do ever few weeks or when I added a new nutrient. If she looks great i wouldnt worry. I need to pick up the probe, I would like to test it with ph'ing run off and compare. I really like this ph meter nice that has a multitude of uses.Indeed, I know it's been gone over before and the video linked over in the Greenleaf Forums. The difference for me this time around is now I have a tool to check my soil pH. But that makes sense that a plant may change its growing environment to allow for the update of nutrients it needs at a specific time. I will shoot for small adjustments and keeping it steady, and keep an eye out for crazy swings.
Thanks @Mañ'O'Green