Ive heard and known that running air from outside would raise ph. In my office has no doors and is next to a door that goes outside so I always assumed it had circulating air. My ph was always 7.8-8.0 and I was ok with that. I had some extra tubing so I decided to run a line outside just to see what would happen and WoW! Immediate increase in ph to 8.4! That is all, bye.
Last edited: