Krap101, can I take a guess at what you were saying?
When water evaporates it leaves the minerals behind. When you top off the tank with tap water, you add more minerals which are never removed. Over time the minerals build up, the hardness increases and so does the PH
. One solution to this is when you do water changes (or top off the tank) add enough distilled (or RO
) water to replace the water that evaporated.
BUT, I'm going to guess that this is not your problem. Have you also tracked the hardness of your aquarium water? If what I have written above was the problem, the hardness and the ph
would have slowly increased over time. I got the impression that your ph
jumped quickly. If this is the case I have no idea what is wrong.
My advice is to sit back, relax and see what happens. 7.6 is kind of high for your fish but is less harmful than a fluctuating ph
which might result from artificial ph
modifiers. Adding a filter (or making any change to an aquarium) is like kicking a well balanced system. And after a while it will settle down. After your tank has had some time to stabilize, reevaluate it. You may want to add more driftwood or add peat to your filter.
This makes sense to me, but I might be way out in left field. If someone knows better please say so. Good luck Fishalicious.