REDOX Increasing But Not Sure Why

[Steve2020]

My Redox for the past 6mo or so has always been in the low to mid 200's and was always curious on why so low but was always told it's fine and not to worry about it. I have been having a Dino issue recently and have been treating for it. Treatment consist of adding Pods, lots of phyto, dosing MB7 and recently alternating dosing MB7 and MB Clean and dosing sodium silicate. Dino's where covering the sand bed only, and on August 8 around 1pm I decided to remove 1/4" of my sand bed mostly the top of a shallow 1" sand bed and since removing some sand my REDOX has been slowly increasing which to me is a good thing but not sure what is actually causing the increase.
Any ideas on what part or a combination of my Dino treatment is effecting the REDOX in a good way? Redox probe is calibrated.

 

[Saltyreef]

Curious as to why you're running a probe if you were always told not to worry about it

Theres quite a few writeups on redox and its impact to aquaria.

I will add that the few exerpts i have read tout ORP stability as one of the most underlooked parameters in aquatic hobbies. Cellular effects of assimilation.

 

[Steve2020]

Two reasons, first because the probe came with the Profilux 4 and second, even from being told not to worry about REDOX unless running Ozone, ( I read Randy's article ), and others, it can be used as an indication of something decaying in the system by seeing a sudden drop in REDOX/ORP.

 

[Randy Holmes-Farley Verified Community Expert]

Algae growing on a probe can raise the reported ORP. Try cleaning it.

 

[Steve2020]

Algae growing on a probe can raise the reported ORP. Try cleaning it.

No algae in my sump. I clean and calibrate all my probes once every 4 weeks. No algae or slime on any of my probes. Also no trapped air bubbles. I have a small power head directed towards all my probes for the last 14mo to prevent micro bubbles getting trapped. Micro bubbles were causing fluctuations in my conductivity probe prior to adding the power head. Redox is pretty much stable now with a max of 392mv and a low of 376mv.