HOw can I get my PH down.

[cook]

Just moved into a house that is "green". It is sealed very tightly. For this reason there is an exchange system that lets O2 rich air in. Anyway I am sure that has driven my Ph through the roof. I have done two 15% water changes and have not dosed anything in the last 3 weeks. It is still high. Will more water changes do the trick?

 

[PrivateJoker64]

OK, so what exactly is your pH?

 

[cook]

Not sure. My pinpoint ph has a bad probe(left it out of the water in the move). I used the liquid test and looked at the chart. The color of the test from my tank is a light purple. With 8.7(the highes on the kit) a dark blue. I don"t know my alk/cal but I am sure they are not a prob. I have not dosed the tank with anything but water changes in a long time.