On a serious note I don't think that meter is testing properly needs to be calibrated at that pH you would see your rock slowly start to melt away just like your calcium reactor
Sorry to hear.. run a refugium on a reverse light cycle, use internet for what god intended, kalk into Ato water, dose alk at night rather than day and run skimmer air intake outside of cabinet. Lot of little things help over time.
I will say I had a similar concern with my Apex pH probe reading similar. People would reply that it isn't correct and my rock would be melting much like the Wicked Witch of the West on a rainy day. So I re-calibrated and it was a lot more accurate if not a tick higher than what a test kit would later report. While I was going back and forth asking some questions, reading, etc, I gradually looked over to the left at my test kit when I noticed for the first time two letters...pH. Then it hit me - Scott - you big dummy - why didn't you just test it
I really don't test my water because it is usually on auto pilot and I let the corals, fish, sand, tell me what is wrong. I only have this test kit because I started a cycle on a upgrade so wanted to track Ammonia and Nitrate during the cycle. Never once thought to check pH. Didn't even know I had it. Then people let me know that my pH numbers are probably off got me looking, calibrating, and then reliazing I actually had a test kit all the time in front of me but never used it.
Now Apex reports pH of 8.2 - 8.4 and my test kit reads closer to 8.2. I believe my pH is over 8 so more or less happy and that is what I track to.