ph and fresh air

[guri]

wanted to get a fresh air in the skimmer. Read online that it stabilizes the ph drilled hole in concrete wall(one foot thick) run tubing after that what happend my ph started dropping during the night 7.65 and during the day 7.8 and i had to add buffers two times a day ( seachem and kalkwasser)to keep at this level any way ph was dropping within half an hour after buffer was used right in front of my eyes bought new ph probe ($50 spend) same.Yesterday before going to the swap diconected tubing and ph is now 8.1 already two days whats going on ??????

 

[CoralMeister]

Don't stress it too much. Everyone's ph drops at night even if you have an airline tube connected. This is a normal thing. Also, you should gradually add any buffers or chemicals. My advice is as you stated, keep the airline tube near the window, not directly out. I've found for whatever reason this works for me. I had an airline tube extended all the way from my water room to the outside wall. I moved the airline tube just on the window ceil, and that keeps my ph pretty stable. (of course, still keep in mind other chemical parameters that may influence ph). IMHO, ph swings like that of yours should be monitored, but you should not be that worried. Alk swings, Temp swings, or ORP swings are much more dangerous than low scale ph swings.