PH is now up to 8.49 and rising

For some reason my PH in my tank is going up. Right now it is at 8.49
Normally the tank is always around 8.25 but it has gone up to 8.49
How to I lower the PH back down to 8.25?

I have a calcium reactor and the solution in the reactor is at 6.79
Do I simply allow more solution from the reactor into the sump to lower the PH to the more acceptable 8.2 range?

Also for terminology is it correct to say that to go from 8.49 to 8.2 is lowering the PH?

My first thought is that the probe is shifting up and needs to be re-calibrated or that the controller unit is reading incorrectly. How about ORP? Is it changing?

Has this pH shift been gradual or just happened today?
Do you have a log of PH, Alk and Ca levels over the last 2-4 weeks?
What do you mean by increasing Ca reactor output? Increased CO2 bubble rate?
In my experience the control of pH is a very dangerous thing. I would be very careful about changing pH by changing parameters on the Calcium Reactor.
I would think it better to turn off the Reactor altogether, check the Alk, Ca and pH for several days to see what changes and how fast.

If my ph is higher then it should be, usually is my ph probe needing to be recalibrated....

Clean it with a soft bristle toothbrush, and then just recalibrate it. You will need a bag of 7.0ph and 10.0ph calibration fluids.

Ok, I see.
Do you know of any place that would have the calibration fluids between SLC to Provo?
I just realized that I do not have 10ph calibration fluid and I cut open the only 7ph that I had so I'll need to purchase both

You can clean your pH probe with all sorts of things, but in some cases (harsh cleaning) it would be recommended to equilibrate the probe in the pH 7 solution overnight prior to calibrating and using the probe.  There is a small porous (to very very small things) frit in the probe body near the bottom (or as part of the bulb) that can clog with organics or foul with Ca or other precipitate.  If it looks dirty and a light toothbrush scrubbing is not enough read up on harsher methods and follow one proven method.  It should be assumed that the probes need to be cleaned fairly regularly to work properly.  No way would you expect them to remain accurate for many many months at a time, although I am surprised how well they do perform.  We calibrate our lab probes every day and find they drift quite a bit... but we are much harder on them than just sitting in a nice clean aquarium!  

A reef aquarium would never go over 8.3 without some kind of help. Besides the Ca Reactor, what other equipment, filter media and additives are used in the tank?

im pretty sure your cal reactor isnt the problem.  At that ph in your reactor your not breaking down the media to produce the extra calcium. It has to be a maximum of a 6.5 ph to break down the media, any higher than that and your spitting in the wind lol. Also the output from a cal reactor is low ph and high cal. If anything slow down your cal reactor and increase your bubble count to lower your ph. Check your alk perams before doing that! I also think your probe could be out of calibration as well. Whats your mag levels? If cal and alk and mag levels are all in check i wouldnt worry about your ph. My tank runs at about 8.3 to 8.5 almost all the time. just my 2 cents

The corals actually seem just fine.
I just ran the following API tests last night and got the following results:
Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: 0ppm
Calcium: 440mg/L
KH: 12dkh
Phosphate: 0ppm
PH: 8.4

I had removed the nitrate pebbles over a week ago and hadn't put them back because the nitrate levels went back down