Shock with Bleach

[Watermom]

Is this a vinyl pool?

[Pool in Carolina Blue]

KurtV:

My pH does drift up so I have been using small amounts of pH minus to bring it down once a week or so. I have been keeping the chlorine level at 5 or higher (the Taylor kit only reads to 5) and the 3 reading yesterday is the first time I have seen it dip below 5 since I took over. Thanks for the link on the alkalinity as that might be a solution.

[Pool in Carolina Blue]

Watermom:

This is a gunite pool. I added bleach last night and brought the chlorine level back up the 5 when I tested this morning.