ORP normal?

[TK_KW]

#reefsqaud #Reefsquadleaders @Randy Holmes-Farley

Tank been up and running since mar 2019. Seems as though through my trends, my orp consistently keeps rising higher and higher through time.

One month ago it was floating around 380 at it's high peak. I have added more fish and coral in the last month.

Today it peaked over 450, normal? And what is considered not normal high rang?

Thanks

 

[Randy Holmes-Farley Verified Community Expert]

Algae growing in an ORP probe can result in false high readings, but in general, unless you are adding oxidizers (like ozone) high ORP is never a concern/problem. It cannot ever get high enough to be any issue.