CO2 bemestingsinstallatie Exclusive 2.000 g - Dennerle

CO2 bemestingsinstallatie Exclusive 2.000 g - Dennerle

• Connect the motor-driven pump to the

control tap. �

Note: It is also possible to connect the

Cyclo Turbo XL (without pump) to the filter

outlet of the external filter. Any

hoses in standard sizes 9/12 mm,

12/16 mm or 16/22 mm can be


• Use the suction clips to secure the Cyclo

in a vertical position in the aquarium, at

least 5 cm below the water surface. �

6. Install and secure the CO hose

• The hose clips enable neat and secure

installation of the CO2 hose. �

Your CO2 fertilizer system

Exclusive is now ready for


The right amount of CO2

(number of bubbles)

7. The right amount of CO2

For magnificent plant growth, DENNERLE recommends a CO2 content in

the aquarium of between 15 and 30 mg/l, between 20 and

25 mg/l are ideal.

The number of bubbles per minute required to achieve this level of CO2

depends on a variety of factors, such as the types of plants in the aquarium,

motion of the water, surface area/volume ratio, etc. That’s why

it is always necessary to determine the CO2 amount for each aquarium


8. How to set the number of bubbles

Rule of thumb for the basic setting: start with approx. 10 bubbles per

minute per 100 l of aquarium water, i.e. for a 200-l aquarium, for

example, use 2 x 10 = 20 bubbles per minute.

Check the CO2 supply and the CO2 levels in the aquarium water regularly

and adjust the CO2 supply if necessary. If necessary, only ever

increase the CO2 level gradually over the course of several days! Please

note: the more vigorous the surface of the water is set in motion (e.g.

by filters, additional aeration), the more CO2 will be expelled from the

aquarium again.



• Open cylinder valve slowly by turning the

handwheel in anti-clockwise direction.

Unscrew valve as far as it will go, then

screw in again by one half-turn. � The

cylinder pressure manometer will now

indicate approx. 60 bar (at 20 °C).

• Open needle valve slowly, initially only

very slightly, until the first bubbles issue

from the opening of the bubble counter.

• Set the desired number of bubbles on

the needle valve:

- Turn in clockwise direction to increase

the number of bubbles

- Turn in anti-clockwise direction to

reduce the number of bubbles. �

Please note: There is always a certain delay before the number of bubbles

changes in response to adjustment of the needle valve. The number

of bubbles should thus be set with due care.

• Check the number of bubbles regularly in the first few days, correcting

as necessary. After this initial period it is generally sufficient

to check the number of bubbles once a week.

• Interesting facts: The CO2 bubbles produced by the CO2 bubble

counter Exact have a mean weight of 0.125 mg and a volume of

0.063 ml. 10 bubbles per minute thus correspond to a CO2 supply

of 1.8 g or 0.9 litres per day.

9. Setting the Cyclo Turbo XL

Install the motor pump

• Connect mains plug to power supply. Observe safety rules (see


Set the control tap

The control tap serves to channel part of the water coming from the filter

into the whirl chamber for the purpose of dissolving CO2 content.

The remaining water flows through the water outlet vent directly into

the aquarium.


• Setting A: No water is supplied to the

whirl chamber.


• Setting B: 50 % of the water is supplied

to the Cyclo, 50 % to the aquarium.


• Setting C: All the water is supplied to

the Cyclo’s whirl chamber.

The control tap should be set such as to attain the largest possible flow

of water through the whirl chamber while at the same time ensuring

that the CO2 bubbles are not forced down but are able to rise slowly.

Set the waste gas vent

The waste gases are discharged regularly and automatically through the

specially designed lid of the Cyclo. For this purpose, the lid can be turned


The left stop (when turned in clockwise

direction), represents the maximum opening

of the waste gas vent, as indicated by

the large bubbles which issue here. The

further the lid is turned in anti-clockwise

direction, the smaller the bubbles become.

At the right stop, the waste gas vent is closed.

See the corresponding symbol on the

lid. �

The waste gas vent should be set such that the waste gases are discharged

on a regular basis, while at the same time ensuring that residual

CO2 in the head of the whirl chamber has as much time as possible to

dissolve. For this purpose, always begin in the setting for “large bubbles”.

If too many bubbles are discharged through the waste gas vent,

turn the lid slightly in the direction of “small bubbles”.

10. CO2 Long-Term Test Correct for simple control of CO2


The CO2 long-term test Correct enables continuous, exact control of the

CO2 content in the aquarium.

The colouring of the special CO2 indicator varies according to the CO2

content: from • blue = not enough CO2 through • green = ideal CO2

content to • yellow = too much CO2.

The level of CO2 in the aquarium can be read directly from the colour

matching scale in milligrams per litre.

The test shows the correct CO2 content at all times by means of the

special CO2 indicator developed by DENNERLE. The test remains unaffected

by any other acids in the aquarium water, e.g. humic acids, and

any changes in carbonate hardness resulting from an increase in water

hardness, evaporation or a change of water!

What’s what

• Remove test container from clasp. Pull off

top part of test container. �

• Take an ampoule of special CO2 indicator

and ensure that there is no indicator in the

neck of the ampoule! For this purpose,

shake the indicator down to the bottom of

the ampoule (in the same manner as a

thermometer is shaken before taking

someone’s temperature). Open ampoule by

twisting off the sealing tab. �

• Drip the entire contents of the ampoule into

the top part of the test container. �




• Slot bottom part of housing including

conical reflector into the top part.

Check that the O-rings are fitted correctly!


• Turn test container carefully (ideally

over a kitchen cloth, in case any indicator

spills out) and insert container in

clasp. 22

• Use the suction clip to secure the CO2

long-term test in an upright position at

a clearly visible point in the aquarium

where a gentle flow of water prevails.



• Stick the colour matching scale to the

outside of the front pane. 24

Please note. As the CO2 takes some time

to diffuse into the indicator, the colouring

of the indicator always responds to changes

in the CO2 content after a delay of

several hours. You should therefore always increase the supply of CO2

in small steps spread over several days until the ideal CO2 content is


11. Use as a Long-Term pH Test

The pH value in an aquarium is determined primarily by the carbonate

hardness and the level of CO2, some of which forms carbonic acid when

it dissolves in the water. Provided that there are no other substances in

the water which will have a substantial influence on the pH level (e.g.

major quantities of humic acids or nitrate, pH plus / pH minus preparations

etc.), the DENNERLE CO2 long term test can also be used to

monitor the pH value in the aquarium.

For this purpose, you must:

• Measure the carbonate hardness of the


aquarium water (tests available from

specialist retailers).

• Stick an appropriate colour matching

scale to the outside of the front pane.


The pH value of the aquarium water

can now be read directly from the colour scale.

Measure the carbonate hardness regularly and always use an appropriate

colour scale.

12. If you’re keen to know more: How to calculate the

CO2 content in the aquarium

As certain correlations apply between CO2 content, carbonate hardness

(CH) and pH value, the CO2 content in the water can be calculated as


18 19

� Bottom part of test container

� Top part of test container

� Conical reflector

� O-ring

� Clasp

� Mounting bracket

� Longlife suction clip

� Special CO2 indicator

� Colour matching scale

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