Ensure that plants do not obstruct the
11
circulation of water through the slits of
the CO
Maxi-Flipper.
2
6. Install and secure the CO
• The hose holders enable neat and secure
installation of the CO
hose.
2
Your CO
fertilizer system
2
Exclusive is now ready for
operation.
The right amount of CO
(number of bubbles)
2
7. The right amount of CO
2
For magnificent plant growth, DENNERLE recommends a CO
content in the
2
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 CO
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 CO
amount for each aquarium individually.
2
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 exam-
ple, use 2 x 10 = 20 bubbles per minute.
Check the CO
supply and the CO
levels in the aquarium water regularly and
2
2
adjust the CO
supply if necessary. If necessary, only ever increase the CO
2
gradually over the course of several days!Please note: the more vigorous the sur-
face of the water is set in motion (e.g. by filters, additional aeration), the more
CO
will be expelled from the aquarium again.
2
• 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 chan-
ges 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 num-
ber of bubbles once a week.
Interesting facts: The CO
bubbles produced by the CO
bubble counter Exact
2
2
have a mean weight of 0.125 mg and a volume of 0.063 ml. 10 bubbles
per minute thus correspond to a CO
supply of 1.8 g or 0.9 litres per day.
2
9. CO
long-term test Correct for simple control of CO
2
2
The CO
long-term test Correct enables continuous, exact control of the
2
CO
content in the aquarium.
2
The colouring of the special CO
indicator varies according to the CO
content: from
2
2
16
• blue = not enough CO
through • green = ideal CO
2
much CO
.
2
The level of CO
in the aquarium can be read directly from the colour matching scale
2
in milligrams per litre.
The test shows the correct CO
content at all times by means of the special CO
2
cator 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!
hose
2
What's what
2
Bottom part of test container
Top part of test container
Conical reflector
O-ring
Clasp
level
• Remove test container from clasp. Pull
2
off top part of test container.
• Take an ampoule of special CO
tor 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 sea-
ling 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!
content.
content to • yellow = too
2
indi-
2
You should therefore always increase the supply of CO
Mounting bracket
spread over several days until the ideal CO
Longlife suction clip
Special CO
indicator
10. Use as a long-term pH test
2
Colour matching scale
The pH value in an aquarium is determined primarily by the carbonate
hardness and the level of CO
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 prepara-
tions etc.), the DENNERLE CO
tor the pH value in the aquarium.
indica-
For this purpose, you must:
2
21
Measure the carbonate hardness regularly and always use an appropria-
te colour scale.
11. If you're keen to know more: How to calculate the
CO
content in the aquarium
2
As certain correlations apply between CO
and pH value, the CO
•
Measure the carbonate hardness of your aquarium water.
•
Read the pH value which corresponds to the desired CO
from the table. You should set this pH value +/- 0.1 by adjusting
the number of bubbles accordingly.
Example: Carbonate hardness 4 °d, recommended pH 6.8 +/- 0.1.
• Turn test container carefully (ideally over
a kitchen cloth, in case any indicator
spills out) and insert container in clasp.
KH 6,3 6,4 6,5 6,6 6,7 6,8 6,9 7,0 7,1 7,2 7,3 7,4 7,5
2
3
4
• Use the suction clip to secure the CO
5
2
6
long-term test in an upright position at
7
a clearly visible point in the aquarium
8
where a gentle flow of water prevails.
9
10 159 126 100 80
11 175 139 111 88
12 191 152 121 96
• Stick the colour matching scale to the
13 207 164 131 104 82
outside of the front pane.
14 223 177 141 112 89
Please note. As the CO
takes some time to
12. Information on the CO
2
diffuse into the indicator, the colouring of
The CO
the indicator always responds to changes in
ensures the most efficient possible use of valuable CO
the CO
content after a delay of several
sed at the opening of the CO
2
hours.
Maxi-Flipper. The CO
in small steps
course of which the CO
2
content is attained.
2
, some of which forms carbonic acid when
2
long term test can also be used to moni-
2
• Measure the carbonate hardness of the
aquarium water (tests available from
specialist retailers).
• Stick an appropriate colour matching
vidual CO
scale to the outside of the front pane.
out combining.
21
Care and maintenance
The pH value of the aquarium water
13. Replacing the CO
can now be read directly from the
colour scale.
• Remove protective cap from needle valve. Close needle valve by tur-
• Unscrew pressure reducer from CO
• Reset number of bubbles. Refit protective cap on needle valve
content, carbonate hardness (CH)
New disposable CO
2
content in the water can be calculated as follows:
lers. TIP: Always keep a reserve CO
2
any difficulties should you run out of CO
content
2
During prolonged periods out of use he pressure reducer should
be unscrewed. The valve of the disposable cylinder which still contains
CO
2
Too much CO
CO
correct
Not enough CO
2
2
pH-value
32
25
20
16
13
10
8
6
5
4
3
3
48
38
30
24
19
15
12 10
8
6
5
4
64
51
40
32
25
20
16 13
10
7
6
5
80
63
50
40
32
25
20 16
13
10
8
6
96
76
60
48
38
30
24 19
15
12
10
8
111 89
70
56
44
35
28 22
18
14
11
9
127 101 80
64
51
40
32 25
20
16
13
10
143 114 90
72
57
45
36 29
23
18
14
11
63
50
40 32
25
20
16
13
70
55
44 35
28
22
18
14
76
60
48 38
30
24
19
15
65
52 41
33
26
21
16
70
56 44
35
28
22
18
Maxi-Flipper
2
Maxi-Flipper is a modern, highly effective CO
diffusor which
2
2
. The CO
is relea-
2
2
hose which is located at the bottom of the
2
bubbles then rise slowly in the Maxi-Flipper, in the
2
dissolves in the aquarium water.
2
At the same time, other gases which are natural-
ly dissolved in the aquarium water penetrate into
the CO
bubbles. These so-called waste gases
2
explain why the bubbles do not dissolve comple-
tely, despite becoming smaller as they rise in the
aquarium water. The waste gases are substanti-
ally lighter than the relatively heavy CO
and thus
2
accumulate in the collector at the top. Here they
are discharged regularly and automatically via the
specially developed waste gas vent.
The running-in period or the CO
Maxi-Flipper
2
is approx. 2 days. Initially, the individual CO
bles combine to form larger bubbles. A biological
surface layer of microorganisms soon forms in the
Maxi-Flipper, however. This ensures that the indi-
bubbles pass through the Maxi-Flipper up to the collector with-
2
cylinder
2
ning in clockwise direction. Caution: Tighten only gently!
cylinder and screw onto new CO
2
cylinder.
cylinders care available from specialist retai-
2
cylinder. Then you won't encounter
2
at the weekend, for example.
2
will close automatically.
2
2
3
4
5
6
7
8
9
10
11
12
13
14
bub-
2
2
17