I have been using a royal exclusiv vertex alpha 200 skimmer with an outside airline connected to it. My ph used to be in the 7.90-8.15 range. The skimmer pump broke and I replaced it with a red sea 600 skimmer. Now the ph is at 7.65‐7.80. Alk is at 8.12.
My question is, can skimmer have such an impact on ph? Or could there be something else that is affecting the ph in addition to skimmer change?
My question is, can skimmer have such an impact on ph? Or could there be something else that is affecting the ph in addition to skimmer change?