pH often?

I check my pH everyday. My girls are 3 weeks old (bucket bubblers) and they drink about a gallon a day (between the 3 girls). I top it off everyday, then check my pH. About every other day it drops to about 5.2 and I raise it back to 5.6.

I'm just wondering if changing the pH every other day is normal or is that too often?

Is it normal for the pH to fluctuate that much in a couple of days?

It is actually better to have a ph fluctuation as some of the nutrients are taken up better at different ph levels, as long as they stay between 5.0-6.8

oh, okay... I never thought about it that way. Thanks papa! I guess I don't have anything to worry about then.