What Should your Ideal ORP reading be?

sditch · #1 05/15/2007, 10:51 AM

I just orderd a AC III controller and wanted to see what is the ideal ORP reading without using ozone? I heard of some people say 400 but I have not seen anyone with a reading that high without ozone.

Also I wanted to see if anyone using a ORP as a benchmark of the preformance of the skimmer or activated carbon.

billsreef · #2 05/16/2007, 07:54 PM

ORP between 300 and 400 is usually a pretty good ball park. It's more about the trends than the absolute numbers, unless your running ozone and need to be sure it doesn't get high enough to be a problem.

sditch · #3 05/23/2007, 11:20 AM

I got my ACIII in with PH and ORP monitor and my ORP is reading between 250 - 260.

billsreef · #4 05/23/2007, 05:40 PM

The important question here is, how does the tank and it's inhabitants look.

Canute · #5 06/09/2007, 04:30 PM

Mine is usually at least 450, and I don't use Ozone. I don't know if that's real or if my probe is wonky.
Everything is pretty happy - corals, fish, inverts.