Tunze pH CO2 Controller Set 7074/2

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Shipped from the manufacturer within 3-5 business days


This item has been discontinued.


The Tunze CO2 Controller Set (7074/2) consists of pH Controller 7070/2, CO2 valve kit 7074.11 (including power supply unit 5012.01).

The pH controller precisely monitors the pH of the aquarium and opens or closes the CO2 valve as needed to ensure precise dosing of CO2. The 12 Volt CO2 valve is nickel-coated to prevent against corrosion. Great for use with calcium reactors or freshwater CO2 injection systems.

TUNZE® digital measuring instruments have been developed especially for the use in aquariums. The instruments with their electrodes operate at a high accuracy and are comparable with laboratory instruments in quality. The clearly arranged operating panel with key pad and adjustment buttons ensure fast and practical handling. The controller comes with parts for two different types of wall mounting.

  • Measuring range pH 1 - 14
  • Display accuracy ± 0.01 pH
  • Switching range pH 5 - pH 9
  • Metering time adjustable abt. 2 - 6 min
  • etering break or without 5 - 15 min
  • Ambient temperature 0°to 45° Celsius (32 to 113 °F)
  • Dimensions 156 x 83 x 30 mm
  • 2-year manufacturer`s warranty.

Product Manuals & Documentation

Tunze pH CO2 Controller Set 7074/2

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

For forty-five years the name TUNZE® has been synonymous with aquariums. Many products and components which we have developed in the course of time are now standard features of aquarium technology today. This confidence in TUNZE is no coincidence. The company has remained true to its philosophy right from the beginning, researching water biotopes all over the world to develop components which enable natural water conditions in the closed environment of an aquarium. In the implementation of know-how, effectiveness and efficiency, TUNZE® takes the lead in environmental compatibility. Their motto is: quality and reliability. These values are upheld with well thought-out and precise tool making by highly qualified experts. The brand names of TUNZE® and Turbelle® meet the expectations of the seal of quality; Made in Germany. Many of the products shown in this catalogue are protected by national and international patents.



Experience Level: Intermediate

Easy to set up

This pH probe/CO2 controller works like a charm! Easy to set-up right out of the box, just had to calibrate the pH probe with some distilled water and presto; continous pH monitoring! and CO2 delivery to the Ca reactor when pH levels are high enough.

5 out of 5 found this review helpful

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