I stumbled onto a problem with my Ph testing. When I tested the ph today it was showing 7.0 which is a major suprise because usually the ph is on the rise everyday, however I did let the Alkalinity drop to 70 about 5 days ago. So I shook the reagent and checked it again and got 7.8. And again 7.7. So I checked with a test strip to compare and 7.2 with Alkalinity of 80. Now what should I believe? Is there a better kit than the k2006? I have 2oz bottle of solution dated 05/20.