Question for all of you that have or SELL controller's

[The Grizz]

Originally Posted by untamed

Make the orp probe the last you add. There is much debate about what orp can really tell you. It certainly is not as easy as "orp should be X". When it drops, it suggests that something has changed, but you don't know what.
You can manipulate/control orp with ozone, bit even that can be tricky because the orp readings can be normally erratic.

I don't think that I am going to add a ORP probe because I have not been able to find enough info to tell me that I need to have this in my tank the way it is set-up.