I'm getting tired of test strips.? The two different brands I have don't agree with each other, other than to say the PH is low.? One REALLY doesn't agree with the API test kit on Alkalinity.? The test strip says 7.? The API test chart stops at 12 at 12 drops of solution.? It is taking 14 to hit the color change.I bought a PH meter and it says my PH is 7.8.? So I added some Sodium bicarb.? At first the PH went down to 7.55.? Today it is up to 8, but my Alkalinity is now up to 16, so I don't want to fool with it any more.Time to buy a RO/DI I guess.Mark