As title states last night I turned on my ac for first time this year and when woke up this morning ph is at 7.9 and always runs at 8.1-8.2 I know this is not out of range or something I should immediately be concerned about but I’d like to know why this happened. I do have my skimmer line plumbed to outside air and before I ran line outside my ph was 7.9 and went to 8.2 after this modification. Now I’m back at 7.9 I don’t understand why any info And clarification would be appreciated Thanks