ORP What the??

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The oxidation reduction potential (ORP) of marine aquaria is a measure of the relative oxidizing power of the water. It has often been recommended to aquarists as an important water parameter, and some companies sell products (equipment and chemicals) designed to control ORP. Many who recommended ORP control have convinced aquarists that it is a measure of the relative "purity" of aquarium water, despite the fact that this has not been clearly demonstrated.

ORP, at its heart, is very, very complicated. It is, perhaps, the single most complicated chemical feature of marine aquaria that aquarists will typically encounter. It is not hard just for aquarists who are not scientists. I had to learn a great deal about the electrochemistry of natural waters in order to write this article, and had help from a number of other chemists in understanding some of the principles that are usually swept under the rug. ORP involves many chemical details that are simply unknown, either for seawater or for aquaria. It involves processes that are not at equilibrium, and so are difficult to understand and predict. Even more daunting is the fact that the chemical species that control ORP in one aquarium might not even be the same chemicals that control ORP in another aquarium, or in natural seawater.

Guys the rest of the article can be found here:

http://www.reefkeeping.com/issues/2003-12/rhf/feature/index.php
 
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Bummer long article..... some other time maybe....

What i understand about ORP:... The measure of your waters ability to purify itself.... it is not the holy grail of water (parameters)purity... but should rather be used as an indication of a long term trend or stability.

An interesting observation..... when setting up my new tank......my orp jumped everytime i placed freshly cooked rock in the tank....immediately.
The largest jump was from 198 to just over 500.... it blew my socks off... i smiled for hours afterwards.
 
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Why do you think it would jump like that.... And what equipment do u use to measure this
 
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Why do you think it would jump like that.... And what equipment do u use to measure this
What caused it?.... hoping someone can tell me....
Equipment used.... IKS Aquastar....Everthing downloads to pc every hour...
 
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dam interesting sunburst, well worth the long read man!! oyu will find a few answers in there about why the jumps, its cool cause he explains it as a battle
 

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