Oxygen Reduction Potential By Jared on 11/15/13
Jared would recommend this product to a friend
Go here: http://www.reefkeeping.com/issues/2003-12/rhf/feature/
In so few words, this probe gives a numerical value for the battle between oxidizers and reducers.
A Must if you run O-Zone.
After 2 months of use this unit has undeniably made the purchase worthwhile. A Few things to keep in mind
-ORP is Inversely related to Ph (Rises at night, Falls during day)
-The avg. value of ORP differs between tanks.
-Sharp unprovoked changes are bad. (Death?)
-Clean with white vinegar every 60 days (at most)