Orp

[Windy]

I have been fighting GHA and it is finally getting better. All during this time my ORP has been between 350-400. Now it is between 450-500, but I still have some GHA. Where should the ORP be approximately. I know its not a simple measurement like salinity.

 

[Adrock]

I feel no higher than 450 but that is just me

 

[Randy Holmes-Farley Verified Community Expert]

In general, ORP will never get too high in the absence of adding oxidizers like ozone. So you never need to worry about high ORP in such a scenario.

Also, ORP starts to read high when the probes get dirty, so you might clean the probe.

 

[Windy]

Thanks!