untsmurf wrote:this may be a dumb question, but are you doing the test properly?
Yes I am testing properly, I have an AP master test kit and following instructions to a T.
Right now, I am turtle-less so there is truly NOTHING in the tank.
I was doing some reading on other websites more geared towards fish keeping, and they said you can not tell the accurate pH of tap water unless you let it sit for 24 hours. Apparently there are gasses that are often trapped in the tap water while en route through the municipal system that will have an effect on a pH test if done immediately out of the tap. This combined with tap water that has a low buffering capacity, can cause high pH spikes.
That is my guess as to what is going on.
Since, I have time before I get a turtle in there, I currently am gonna try to sort this out truly one step at a time. I filled the tank with tap water, didn't add anything, have the filter off, and am letting it sit overnight. I will test tomorrow to see where it settles. My guess is it will make the same 8.8+ spike...
If not I will add things one at a time and wait 24 hours between tests... but Im almost certain i wont have to. If it just is a case of REALLY basic tap water, I plan on investing in a RO filtration system. I was planning on getting one for the home for my personal drinking water anyways... but I will use that water to fill the tank with as well. Apparently that should solve these kinds of problems if it is a case of just being an issue with the tap water itself.