DOHSE AQUARISTIK HOBBY pH-Control eco User manual

A trademake of Dohse Aquaristik
Instructions for use
pH-Control eco
Item nr. 43000
Dohse Aquaristik GmbH & Co. KG · www.dohse-aquaristik.com

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1. Introduction
1. Introduction ...................................................................................... 3
1.1 Display
1.2 Safety instructions
2. Description of the Basic Functions .................................................. 4
2.1 Function monitoring of external devices
2.2 Safety shutdown during programming
2.3 Safeguard function
2.4 Return function
2.5 Malfunction display
3. Description of the Programmable Functions ................................. 4
3.1 Clock programming
3.2 pH Set Point
3.3 CO²-Night off function
3.4 pH Alarm
3.5 pH Electrode Calibration
3.6 Calibration Reminder
4. Quick Start Guide to Programming ................................................ 6
5. Programming Instructions ............................................................... 7
5.1 Clock programming
5.2 pH Set Point programming
5.3 CO²-Night off function (de)acitvation
5.4 pH Alarm programming
5.5 pH Electrode Calibration
5.6 Calibration Reminder (de)acitvation
6. Reset ................................................................................................. 13
7. Factory Presetting ............................................................................ 13
8. Source of Fault ................................................................................. 13
9. Technical Specifications ................................................................... 14
10. EC Declaration of Conformity ....................................................... 14

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1. Introduction
1.1 Display
= Numeric display
= Time in hours
= Time in minutes
= pH value
= Night programming active
= CO²supply to aquarium active
+ = pH alarm
+ = Calibration memory
= Activation or deactivation of functions
= CLOCK (displayed, when starting the real time programming)
= Calibration (displayed, when starting the calibration or calibration
alarm programming)
= Night (displayed, when starting the night off function
programming)
1.2 Safety instructions
The HOBBY pH-Control eco is designed exclusivly for use in enclosed rooms.
All electronic components of the device must only be operated whilst they
are free from defects. Should product be damaged, please return to your
dealer for repair. Continued operation of the device may cause fatal injury
from an electric shock. Ensure that the HOBBY pH-Control eco can not come
into contact with water.
This technical products must only be operated as supplied. Electronic
components must not be modified in any way. Housing must not be opened.
If the product is damaged cease useage or shut down immediatly by pulling
from mains.

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2. Description of the Basic Functions
2.1 Function monitoring of external devices
The housing is fitted with an LED. In operating mode this indicates the active
control of the external device.
2.2 Safety shutdown during programming
When entering into programming mode, the slot is deactivated for safety
reasons.
2.3 Safeguard function
To protect electronic components, a delay of 60 seconds is set between
2 switching states before the slot becomes active again.
2.4 Return function
The HOBBY pH-Control eco automatically returns to operating mode when
no button is pressed for a period of 90 seconds while in programming mode.
2.5 Malfunction displaying
In case of an pH-Electrode defect is displayed.
3. Description of the Programmable Functions
In programming mode, the functions can be configured in the following
sequence.
3.1 Clock programming
The HOBBY pH-Control eco has a built-in real-time clock. The factory presets
the time at . The time setting is cleared during a resetting procedure.

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3.2 pH Set Point
The pH set point can be adjusted within the limits of 4.0 - 9.9. If the measu-
red pH value is outside the display range, values lower than 4.0 are displayed
as LO, values higher than 9.9 are displayed as HI. Outside of these limits, the
pH channel is switched off. The pH-controlled CO²fertilisation is carried out
through permanent measuring by a connected pH electrode and switching of a
connected CO²magnetic valve with a switch hysteresis (the difference between
the switching point and the triggering point) of 0.1 and a control accuracy
is +/- 0.1. The switch hystereris is pH 0.1, the control accuracy is +/- 0.1
(reference value).
Please note: If no pH electrode is connected to the Dupla pH-Control
pro, so that the BNC socket is open, fictitious pH values will be
displayed.
3.3 CO²-Night off function
This enables to stop supplying CO², controlled by a magnetic valve, into your
aquarium during the night if desired.
3.4 pH Alarm
When the programmed pH set-point is either not met or exceeded, the
flashing LED light indicates an alarm. The alarm window can be set between
0.1 and 4.0 deviation from the set point. By default, a deviation of pH 0.5 is
preset. The alarm function can be disabled by setting 0.0.
3.5 pH Electrode Calibration
The factory setting of the calibration points are pH 7, pH 4 and pH 9, the
calibration sequence first is pH 7, then pH 4 or alternatively pH 9. The
calibration process can be cancelled by pressing the and button
simultaneously.
3.6 Reminder of Calibration Function
With this feature enabled, every six-weeks the LED light and on the display

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flashes as a reminder to check the pH electrode calibration. If you prefer not to
carry out a calibration, the memory display clears after activating any button
and reappears in another 6 weeks.
4. Quick Start Guide to Programming
Single mode (manufacturer presetting): Optionally either pH value or current
time are displayed continuously
Toggle mode: pH-value and current time are displayed alternately in a
3 second rhythm.
Changing between toggle and single mode: Press the button while in
operation mode.
Switching to programming mode: A) Pressing the button enters the
main programming menu.
Moving within the menu structure: B) With the or buttons you can
scroll through the menu items.
Modifying programming: C) Pressing enables the modification of
programmed values, the changeable value flashes. D) Increase or decrease
required values with the or button. E) Acknowledge by activating the
button.
Quitting the programming mode: F) After 90 seconds of inactivity you
automatically access the operational mode. From the main level you can
access the operational mode as well by holding down the button for
3 seconds. All changed values will be saved.
Cancelation of programming: By pressing the and button simultaneously
it is possible to quit the programming mode at any time without saving.

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Manual activation
/ deactivation: The slot can be turned on and off
manually. To activate hold , then press . Press these buttons a second
time to deactivate. If you press a third time, program mode is reactivated.
Please note: You will find a graphical quick start guide
here: www.dohse-aquaristik.de/pdf/gebrauchsanwei-
sungen/43000_pH-Control_eco_Kurzanleitung_GB.pdf
5. Programming Instructions
Connect the pH electrode to the HOBBY pH-Control eco. To start the pro-
gramming mode press button
Please note: Without connected pH-elctrode the error will be
displayed.
5.1 Clock programming
Entering the programming mode, flashes.
Press the button, the hours digits flashes
Use the and buttons to set the hours between 0 and 23.
Press the button, the minutes digits flashes.
Use the and buttons to set the minutes between 0 and 59.
Acknowledge with the button.
When finished, will flash again. Scroll to the next main menu item with
the button, then press the button.

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Please note: Once the clock has been set, you can use or to
directly access the other settings.
Attention: The HOBBY pH-Control eco does not automatically switch
between summer time and winter time. This change must be entered
manually.
5.2 pH Set Point Programming
When flashing was acknowledged with , or your last set value
flashes.
Set the required value with the or button, then acknowledge with the
button.
Please note: pH Set Point presetting is 7.00. Depending of water
values from where your fishes come, higher or lower values could be
required.
When finished, will flash again. Scroll to the next main menu item with
the button, then press the button.
5.3 CO²-Night off function (de)activation
When and are flashing and you want to supply CO²to your aquarium
in the night, scroll with button to next main menu item and acknowledge
by pressing .

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When flashing and was acknowledged with , flashes.If
you do not want to supply CO²to your aquarium in the night, press or 
button to change to and acknowledge by pressing .
Presetting value or your last programmed value flashes in the display.
Set the desired start of night time in hours with the or button, then
acknowledge with .
Presetting value or your last programmed value flashes in the display.
Set the desired start of night time in minutes with the or button, then
acknowledge with .
Caution: Here (displayed right down site) is the time when the
stop of CO²supply should beginn, for example at when your
lighting is switched off.
Presetting value or your last programmed value flashes in the display.
Set the desired end of night time in hours with the or button, then
acknowledge with .
Presetting value or your last programmed value flashes in the display.
Set the desired end of night time in minutes with the or button, then
acknowledge with .
Caution: Here (displayed right down site) is the time when the
stop of CO²supply should end, for example at when your lighting
is switched on.
Please note: When the night off beginning time is reached the display
shows a measured but not regulated pH value. Left below and right
below is displayed.
When finished, will flash again. Scroll to the next main menu item with
the button, then press the button.

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5.4 pH alarm programming
When flashing and was acknowledged with , flashes.
Use the and buttons to set the +/- alarm between 0.5 and 4.0.
Acknowledge with button.
Advice: means that no alarm is set.
When finished, and will flash again. Scroll to the next main menu item
with the button, then press the button.
5.5 pH Electrode Calibration
When flashing was acknowledged with , .
To calibrate the pH Electrode go on as described:
1. Remove the protective cap from the electrode tip.
2. Rinse electrode tip briefly with destilled water.
3. Dip the electrode into the pH 7 solution and press . Then a measured
running value is displayed.

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When this value has settled, press the button for three seconds – until
the LED light flashes one time as confirmation of acceptance. Then is
displayed for one second.
4. flashes. Take the elctrode out of the pH 7 solution and press to
proceed calibration.
5. Rinse the electrode tip briefly with destilled water.
6. To calibrate the pH Electrode for freshwater aquaria, dip the electrode into
the pH 4 solution for freshwater and acknowledge with .
(To calibrate the pH Electrode for saltwater aquaria, use the or button
until flashes, dip the electrode into the pH 9 solution for saltwater and
acknowledge with .)
Then a measured running value is displayed.
7. When this value has settled, press the button for three seconds until
the LED light flashes one time as confirmation of acceptance. The calibration
is finished.
8. Rinse the electrode tip briefly with HOBBYdest.
9. Fix the electrode in the aquarium with suction cups.
Please note: The calibration can be interrupted at any time by pressing
the or button at the same time.
Caution: Used electrodes which top has been dried completly in the
protection cover need to be put in water over night before the
calibration is done. New electrodes need a 14 days run-in period.
After that a second calibration is necessary for precise mesurement.
When finished, , and are flashing.

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Please note: Normally you would expect to flash again. Exceptio-
nally here it does not. In case of pressing by mistake you would
delete your just finished calibration and start again. So for safety
reason after calibration is finished you directly access the calibration
reminder function.
5.6 Calibration Reminder (de)activation
The factory presetting is an activated visual calibration reminder alarm.
If you want to keep it, press for 3 seconds while , and are
flashing. You return to operating mode.
To deactivate the reminder press briefly while , and are
flashing. Use the and buttons to change into and acknowledge
with .
When finished, , and will flash again.
If you want to finish programming, press and hold for 3 seconds until
the display returns to operating mode.

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6. Reset
Should your HOBBY pH-Control eco not function correctly, please perform a
reset:
1. Unplug from mains
2. Plug the mains plug back in while keeping the button pressed
3. Release the button
Please note: All programmed settings, except those for the clock, are
lost. The HOBBY pH-Control eco will regulate with factory’s presettings.
7. Factory Presetting
After the event of a power failure, the HOBBY pH-Control eco starts with the
factory presetting again.
Clock setting: 12:00
Single / toggle mode: Single mode
pH point: 7.0
pH Alarm: OFF (0.0 means ‘no alarm’)
pH calibration memory function: ON
CO²-Night off function: Off (CO²is supplied during the night)
8. Source of Fault
In the case of a problem, first reset to the factory settings. If this does not
solve the problem, please search for the fault in the following table:

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In the event of a warranty or repair issue, please return to the place of
purchase.
9. Technical Specifications
Operating voltage: 230 V, 50 Hz
Load capacity: Max. 2,000 W (ohmic load)
pH control range: 4.0 – 9.9
pH control accuracy: +/- 0.1 (reference value)
pH switch hystereris: 0.1
(the difference between the on and off switching point)
pH alarm range: +/- 0.1 – 4.0 adjustable in 0.1 pH increments
pH calibration memory: Six-week
BNC Adaptor cable length: 20 cm
10. EC Declaration of Conformity
The manufacturer declares that the devices comply with the requirements of
the relevant EMC and LVD standards and are therefore in conformity with EC
directives 2004/108/EC and 2006/95/EC.
Replace pH electrode Possible cause Solution
is displayed pH electrode defect Replace pH electrode
Fluctuating pH value pH electrode cable too
close to a mains cable or a
CO²reactor
Re-locate pH electro-
de cable

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A trademake of Dohse Aquaristik
Flora Fit
Adds to the aquarium water all the
micro- and macronutrients required
for optimum plant growth without
encouraging algae growth at the
same time. Flora Fit contains iron,
potassium, manganese and molyb-
denum, as well as other elements.
These are multiple-stabilised and are
absorbed directly through the leaves.
Flora Fit can be used for weekly
fertilization and as a daily fertilizer.
Free of nitrates and phosphates .
100 ml / 250 ml / 500ml
Item nr. 41030 / 41035 / 41040
Dohse Aquaristik GmbH & Co. KG · www.dohse-aquaristik.com

Dohse Aquaristik GmbH & Co. KG
Otto-Hahn-Str. 9
D-53501 Gelsdorf
Telefon: [phone] - 94 15 0
Fax: [phone] - 94 64 94
E-Mail: [email protected]
Internet: www.dohse-aquaristik.de
HOBBY Aquaristik · HOBBY Terraristik · Dupla · DuplaMarin