I have been using a red sea PH test for over a year. It read 8.2 24/7. I have been suspect of this but the tank has not shown any ph related issues that I am aware of and figured the test was not sensitive enough to show the fluctuations so I was not all that concerned. I have had plenty of issues but none that I know are tied to low PH. I am planning to try kalkwasser so I decided to get another test to feel more confident in my PH level. I landed on the Hannah PH checker. This is reading 7.6. Ran the RS test simultaneously and it showed 8.2. I did this 3x with the same results. Am I to assume my tank has been running at 7.6? I may not be aware of some of the side effects of low PH, what should I be watching out for?