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Aqua Medic mV Computer (ORP)

Product #DI-AM78011

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Description: Aqua Medic mV Computer. Includes ORP (Oxygen Reduction Potential) probe with threaded head for use in Aqua Medic nitrate reductors. Fully digital controller with adjustable differential.
Brand: Aqua Medic

Product Information

Aqua Medic mV Computer

Aqua Medic mV Computer One Set Point, Variable Hysteresis, Two Directions, Includes Probe. The ORP probe has a threaded head for use in Aqua Medic nitrate reductors. Fully digital controller with adjustable differential.

ORP (Oxygen Reduction Potential) is not an easy water quality parameter to fully understand. Fortunately you need to know little more than that it is measured in mV and that it will be the measure by which we switch Ozone Generators and the pumps that regulate Nitratereductors. The Aqua Medic mV Computers are outstanding instruments to accurately monitor milli-volts and switch a powered outlet in order to achieve the set potential.

The mV Computer is a microprocessor run mV monitor and controller that provides high precision measurement and control. The waterproof proof front panel includes soft touch keys to set the operating values and to calibrate the electrode. The switching bandwidth (hysteresis) is adjustable over a wide range to define the amount of mV drift allowed before switching. With the mV Computer you can set the control direction up or down, in low mode the controller can activate an Ozone Generator to boost skimmer production and to maintain an appropriately high system redox-potential, to control the flow rate through a Nitratereductor to retain anoxic conditions ideal for denitrification. The high mode function allows for reducing additions. The Aqua Medic mV Computer includes an electrode and a complete set of calibration fluids.

With the purchase of this digital measuring and regulating equipment you have selected a top quality product. It has been specifically designed for aquaristic purposes.

With this unit, you can continuously measure and control the redox-potential of the water in your aquarium.


The redox-potential or oxidation/reduction potential (ORP) is an electrical value which is a parameter for the oxidation and reduction processes in the aquarium.

The redox-potential is of special interest in:

- Assessing the quality of sea water in aquariums. The ideal range is between 300 mV and 400 mV. If needed, the range can be increased by injecting Ozone into the protein skimmer. The higher the value - the higher the percentage of oxidation, the cleaner the water.

- The redox-potential is used in denitrifying filters to check the acidity. The ideal values are between -300 mV and -100 mV.

- In swimming pools the redox-potential can be used for sterilisation by regulating the amount of chlorine added by maintaining +700 mV.

  • Weight: 2.75 lb
  • Height: 14 in
  • Width: 7 in
  • Depth: 4 in
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