Possible, but he pH didnt do that until the day I started the Pool shock. I was reading that there are 2 different pool shocks available now since when I was using it forever ago. Read that one of the 2 that contains actual "chlorine" can cause pH to dance constantly and I think that may have been what I was experiencing, but I'll find out soon enough. I got a lb of the 65% calcium hypochlorite to test out so well see if it makes me chase pH again. I'll follow
@Turpman ratio and see how she goes.