CO2 in the Water
Sounds like your well water may have a lot of CO2 in it, really fairly common.
In my ever-humble opinion, unless you have flora or fauna that really require it, I agree with GraphicGr8s and would not worry about the pH.
Your plants are probably getting a little extra CO2 at each water change.
I recommend easing off the pH buffer, changes in pH that are a result of CO2 do not affect the fish, other changes greater than 0.25 per day can be harmful. A couple of water changes will probably take care of the situation.
If your Guru tells you otherwise and you are true believer that is okay I will not argue the point.
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I pretty much limit what I say to things that anyone can easily verify from recognized references or by direct observation. If it is my opinion I say so.
Last edited by JoeRoun; 11-07-2014 at 04:34 PM.
Reason: GraphicGr8s is very critical of my grammer, so i fixed it, i hope