So I just got back from my LHBS where I picked up some pH test strips. I took a sample out of the carboy and did some readings. Here's what I got:
pH: between 3.2 and 3.6
The test strips come with that little sheet used to compare the color of the strip to, and with my strip the color was somewhere between 3.2 and 3.6. So I'm checking out Ken Schramm's books and he recommends trying to adjust the pH upwards if your pH goes below 3.5. Well, since I don't have a very precise reading I could be below 3.5 or I could be right at it.
My question is this, if you were me, would you, a) do like Ken suggests, and add CaCO3 a little at a time and try to raise it up to 3.8, or would you b) wait it out a few days, check it again and if it's lowered even more, fix it then?
My gut is telling me to wait, but I figured it would be best to ask.