Permanent CO2 test Correct (Dennerle Egg)

Helps you keep the CO₂ content always in the green.

Depending on the content of CO₂, the CO₂ Special Indicator reacts by changing color from
blue = insufficient CO₂ over
green = optimal CO₂ to
yellow = too much CO₂

The color chart of six colors enables you to determine the amount of CO₂ dissolved in the aquarium water directly in milligrams per liter, and to adjust your CO₂ supply easily and safely.

Especially easy and exact thanks to the CO₂ Special Indicator.
Standard permanent CO₂ tests are filled with a mixture of aquarium water and indicator fluid.
Some disadvantages of this method: the acids contained in every aquarium (e.g. humic acids, nitrate and so on) can falsify the test result. Moreover, other CO₂ tests require you to measure the carbonate hardness as they only determine the pH of the water.
The Dennerle Permanent CO₂ Test Correct, on the other hand, uses the ready-to-use CO₂ Special Indicator, that does not have to be mixed with aquarium water but is used without dilution.

Decisive advantages ...

Easy
No need to measure the carbonate hardness. You only need one color chart.

Safe
The Permanent CO₂ Test Correct +pH shows the correct CO₂ content at all times - not depending on other acids in the water like humic acids. Alterations of the carbonate hardness caused e.g. by the use of re-mineralizing substances, evaporation or water changes do not have any influence on this test either.

Exact
The Permanent CO₂ Test Correct +pH allows you to directly determine the CO₂ content in milligrams per liter – no additional measurements or cumbersome table calculations required. Also for low carbonate hardnesses.


Complete kit consisting of:

• test container
• CO₂ Special Indicator
• color chart of six colors