Reef Central - UK

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More and more of my time is spent answering questions from hobbyists. I believe this is happening because the options for aquarium management are growing at such a dizzying pace that the art and science of it has not kept up. Here is one sampling of some of the more frequently asked and more important questions asked.

Redox is another poorly understood measurement in the hobby. Redox is measured with an electrode, very much like pH is measured with an electrode. Just as electrode pH measurements are very much dependent on a properly functioning and calibrated electrode, true redox measurements are even more dependent on function and calibration of the electrode. Unfortunately, redox calibrators do not have the stability characteristic of pH calibrators. While accuracy and precision are dependent on electrode function, many hobbyists have the natural inclination to assume that digital read-outs are highly accurate, regardless of the condition of the electrode.