Johnny- how long has it been since your digital pH meter was calibrated?
Driftwood will lower pH, but that's still pretty low.
I agree, hardness is really what you need to be looking at, and discus prefer soft acidic water. I agree with Naja- if your goal is to breed discus then you don't want to be adding baking soda or "neutral regulator" I'd personally start doing lots of PWC with RO water to try and get out most of the chemicals you've added to date. You need to do at least 50% weekly PWC anyways to breed.
You don't want any nitrAtes in your discus water if you want to breed, so 0ppm is good. Did you test ammonia or nitrItes?
Naja linked you to some good sites. Sounds to me like you've got some more researching to do?
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