Sps and redox numbers

[trueblackpercula]

Hello Everyone,

I ma completely new to understanding redox numbers, but from what I gather anything over 650 is bad and anything below 200 is bad.

I have been having issues with color and stn/rtn so i decided to lay off the VSV and a few other additives to see if i can stop the madness.

But after a couple days i have noticed that my redox has been going up way to fast, Is this normal?

http://reefcentral.com/forums/album.php?albumid=213&pictureid=69529

 

[Sps_Reef]

What is Redox?

 

[JB NY]

Redox = ORP
Redox is hard to really measure. The probes are not as actuate as they should be and need to be cleaned. Case in point the redox level you are showing is crazy high. In a properly calibrated probe, a reading of over 400 is considered very good and mostly is achieved using ozone to get it that high. 500 and higher is either going to kill your tank or the probe is bad, or something is not calibrated right.

I think if you actively monitor your redox the numbers should be in the 300s, it will fall during the day and rise at night. My redox goes from a high of about 350 just before my MH lights turn on, and falls to about 340 about the time they turn off.

Redox can be helpful I think when looking at trends and also to point out when something is happening. eg the redox falls into the low 200s for a few hours when I add Special blend additive to the tank.

Personally I do not pay much attention to my redox unless it suddenly jumps away from the norm. If you are new to monitoring redox on your tank I would suggest you do not take any real action on it until you have a good understanding of readings it is giving you it in relation to you tank.

HTH

 

[markalot]

I am running 325 to 355 on an uncalibrated probe I simply stuck into the sump and have never cleaned.

Like JB I just look for sudden changes, not hard numbers. When I removed an invasive green pipe organ coral, for example, my slimer browned out and redox dropped to 250 and took a few days to rise back up to the normal range. Obviously I removed too much at once and released something.