PH Question

[wdrury]

Hi everyone,just a quick question.what exactly causes PH to rise and fall?

 

[Bloo]

In essence, water that is poorly buffered (low kH or temporary hardness) will be subject to higher pH fluctuations than well-buffered water.

Here is a great article on KH, GH and PH.

Edit: The-Wolf also did a great summary in this recent thread.