Dennerle Einweg 300 Space Notice D'emploi page 17

• The pressure reducer can be unscrewed again at any time – the
cylinder valve closes automatically. A brief hissing sound may
also occur when unscrewing the pressure reducer – it is thus ad-
visable to unscrew the pressure reducer swiftly at the beginning.
2.2 Fitting the check valve
• Cut a piece of approx. 10 cm in length from the CO
ensuring that the cut is straight.
• Connect the short hose to the entrance of the check valve, and the
long hose to the exit. Slide hoses as far as they will go onto the
hose connectors and fix with coupling rings.
IMPORTANT: The arrow on the check valve must point in the CO
flow direction, i.e. from the CO
• Connect the short hose to the pressure reducer and secure with
the coupling ring.
2.3 Connect CO Flipper
2
• Rinse Flipper with warm tap water (no detergents!).
• Moisten the hose connector slightly and fit the CO
If required, the section of hose between the check value and the
Flipper can be shortened. The shorter the hose, the more quickly
the desired number of bubbles can be set.
• Choose a spot in the aquarium which is as dark as possible (to
prevent algae growth) and where the water movement is good.
• Fix Flipper in vertical position, at least 5 cm below the surface of
the water. µ
2.3 Connect to the power supply
The integrated solenoid valve enables the supply of CO
1 With a time switch
This serves to cut off the CO
any CO during the night. Tip: Connect the pressure reducer to the
2
time switch which is also used to control your aquarium lighting. ¸
2 Or with a pH controller
A pH controller such as the Dennerle pH controller Evolution measures
the pH value in the aquarium continuously and controls the supply of
CO precisely and fully automatically via the Space pressure reducer.
2
¹
Control states:
Power ON = LED ON = solenoid valve open.
Power OFF = LED OFF = solenoid valve closed.
Your CO fertilizer system is now ready for use.
2
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source to the diffusor (Flipper)!
2
2
to be controlled:
2
supply at night, as plants do not consume
2
3 Setting the amount of CO
(number of bubbles)
3.1 The right amount of CO
For lush plant growth, Dennerle recommends a CO
of approx. 20 to 25 mg/l.
Levels of CO
hose,
2
growth and should be avoided, so as to ensure that fish and other
creatures living in the aquarium are not subjected to any unnecessary
stress. The CO
term test (see 4) or by measuring carbonate hardness and pH value
(see 4.7).
2
3.2 Setting the number of bubbles
The required number of bubbles is dependent on various factors, such
as the stock of plants, water movement and lighting intensity. The ap-
propriate CO
for the specific aquarium concerned.
supply hose.
Rule of thumb for the basic setting: Begin at approx. 10 bubbles
per minute per 100 l of aquarium water, i.e. 2 x 10 = 20 bubbles per
minute for a 200 l aquarium.
Adjust the CO
over several days. Please note: The more vigorously the surface of
the water is set in motion, the more CO
aquarium again.
• Slowly turn the setting knob on the pressure reducer towards
" + "(approx. 1 complete turn) until the first bubbles issue from
the Flipper.
• The desired number of bubbles can be set by turning the setting
knob to " + " or " - ".
Please note: After adjusting the pressure reducer, there is al-
ways a delay before the number of bubbles is altered accordin-
gly (the hose acts as a pressure buffer). The number of bubbles
should thus be set in small steps, always waiting a couple of mi-
nutes until the new setting has stabilised.
Note: If the setting knob is turned towards " – " in larger steps
of around 1 complete turn, the pressure reducer will release the
superfluous pressure through a small vent hole – audible as a
brief hiss. This venting serves to quickly stabilise the newly set
number of bubbles.
• 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.
2
above 30 mg/l are not necessary for healthy plant
2
content can be determined by means of the CO
2
supply level thus requires to be determined individually
2
supply to the desired CO content in small steps spread
2 2
2
level in the aquarium
2
long-
2
will be expelled from the
2