Apex ORP & PH probes #’s questions

[Cpage101]

I know not to chase # and to go on how the tank looks (Which it is thriving) but here are a few questions So lately I have been having my ORP creep up over 450. At this time I have very little algae in the display and just about 0 in the sump. I have a PH probe in the tank which located in one of the overflows. PH at peak lighting hours will go up above 8.50. The PH probe in my sump will will go as 8.10 +/- ( I run a reversed schedule fuge light also) I have calibrated my PH probes in the last 4 months. So here is my questions. 1. does anyone else have an elevated ORP above the recommended 250-450Mv?
2. Does anyone else have a tank which is running sucessfully at these elevated numbers?
3. Do you think it may be time to replace my PH probe in the display and my ORP probe in my sump? ORP is like 2 years old and PH probe is like 1.5 years old?
4. Should I ignore this concern and just let it do what it is doing?

Some pics with orphek blue flashlight and polyp Lab filter 5:30 AM today

Thanks All,

Thanks All,
Happy Reefing

 

[Chris A.]

Most companies recommend changing out ph probes every year , not sure on orp

 

[Robert M]

Below link might be interesting if you haven't seen it. Figure 1 shows the plot of someone's aquarium ORP values over time--all of them are above 450. I'd be skeptical of using the ORP prope values for anything--particularly if it's never been calibrated. Generally I think people look for sudden changes in ORP to indicate something may have happened--like a death of a fish or something.

http://reefkeeping.com/issues/2003-12/rhf/feature/index.php

 

[Cpage101]

yes I have read this before which death would cause a downswing in ORP.

Thank You