Oct 2, 2012 #1 B bobzond Aquarium Advice Apprentice Joined Aug 14, 2012 Messages 31 My Tap water is testing at 8.2 straight from tap. However, once left out over night it tests at 7.4ish. My tank is around 7.4 as well. Is it normal for tap water ph to reduce when left out?
My Tap water is testing at 8.2 straight from tap. However, once left out over night it tests at 7.4ish. My tank is around 7.4 as well. Is it normal for tap water ph to reduce when left out?
Oct 2, 2012 #2 Cynic Aquarium Advice Addict Joined Dec 13, 2011 Messages 1,272 PH does reduce when it's aerated.