06-29-2006, 01:45 PM
Join Date: Sep 2004
Location: Geneva, Switzerland
Are you sure that's the pH? You need to let the tap water sit in a glass or something for 24 hours and measure it again.
A pH of 8.5 means that your KH would be around 25. I have tap water KH of 15 and I thought that was high!
And welcome to APC