bumping up PH? and a calcium question....

[350gt]

Something I never have done was test my PH in my mix saltwater for my water changes. I did today to both my display tank and a little water change that I like to do in between my big ones...

My tank fluctuates at night from 7.8-7.9 to 8.0-8.1 during the day via my reef keeper... I tested right now with a cheap API kit and the reading was the same...

How can I bump up the PH in my bucket to slowly bring up the PH in the tank a bit? Should I even worry about it? everything is doing fine....


Again i tested for calcium, something I never do....... just to see where my tank is standing and it was off the charts with the salifert kit, the highest it reads is 500 i believe.. and closer to the 520 endpoint on the API test (I HATE COLOR TEST)..... but I want to say it was at 520 or a little over....

Should I be concerned? again everything looks good..... I really want to know what my alkalinity is now. I really thought I hated testing but I guess I like to know what my levels are at......