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Turbo Calcium-Reactor 3174
General aspects
The Turbo Calcium Reactor is used in salt-water aquariums to establish the
necessary supersaturation of calcium and to stabilize the pH value at about
8.2. In the process carbonic acid (CO
from pure hardness granulate (lime). In the reactor, dissolved carbonic acid
is passed over the hardness granulate (CaCO
In the process the carbonic acid is largely neutralised and saturated with
2+
calcium (Ca
). At a contact opening the reactor releases a slightly acidic
calcium solution into the aquarium.
In order to prevent an overdose, the reactor has to be supplied via a CO
control station (e.g. Tunze CO
2
sure reducing valve. In aquariums from 200-2000 litres, calcium values of
over 400 mg/l and an increase in the carbonate hardness may be attained.
After a running-in period of 2-6 months (depending on the circumstances)
the difference between the pH values of day and night will minimize due to
a growing buffer of lime-carbonic acid.
Preparations for the initial operation
Application as Ca/CO
reactor: Before installing the reactor, fill it with the
2
lime granulate supplied as shown in Fig. 5. Never turn the pot counter-
clockwise, the bottom plate will come loose ! Switch the pump off before
changing the granulate !
Application as a mere CO
reactor : Install the reactor without fill.
2
Installation in the aquarium
Immersion depth minimum 150 mm to 1 m
The water line is the upper groove and tongue (built-in depth abt. 28 cm). Use
the lateral groove and tongue to attach the Comline components individually
or in an assembly at a suitable place of the aquarium. For firm attachment
of Comline housings, please refer to Fig. 4.
Please refer to Figs. 1 and 1a for attachment to vertical aquarium pane edge
by means of the frame holding device (2 x 3000.14) supplied along with the
unit. The Comline reactor can be attached by means of holding device
3000.14 and silicone adhesive (article No. 312.72) (cf. drawing).
If the aquarium has a high pane edge, press the suction cups (as supplied)
on to the pane tightly and use silicone adhesive to secure against slipping
down (cf. Fig. 2). In case of glass tops with a contour protrusion of a
maximum of 50 mm, use holder set (article No. 3166.14) as shown in Fig. 3,
in addition.
Securing
(cf. Fig. 2)
Apply silicone, about as big as a sugar cube, on the dry suction cup and
press it to the cleaned pane (blade cleaner). In case of underwater
application the silicone has to be applied within 20 s (skin formation).
Allow 24 h to harden, without load.
Putting into operation
If the reactor is used in an aquarium cabinet (immersion depth 150 to 280 mm),
the air bubble in the reactor pot has to be removed by means of a CO
Prevent re-penetration of air by immediate connection to the bubble counter.
The reactor has been fitted with the pump. Attach CO
counter as shown in Fig. 6. Fill the bubble counter three-quarters with fresh
water. For the operation of the reactor, pump 306 has to supply water, and
has to be connected up to the 230 V (115 V) power mains. The centrifugal
pump has to be operational so that faulty gases (air) from the CO
remain low in the reactor pot.
Adjustment of the pH value
First, you should find out the day and night variation in the aquarium. The
setpoint value set at the pH controller should be oriented at the natural pH
values (pH 8.2). An aquarium with a pH value of pH 8 in the morning and a
pH value of 8.3 in the evening can reach good calcium values with a setpoint
value set to pH 8.20 to 8.25.
Please keep in mind that even a low infeed of calcium and CO
the growth rate of algae and corals. This point has to be taken into account
especially, if other growth-enhancing minerals are available in sufficient
quantities (e.g. nitrates, phosphates, iron, et cetera). In order to prevent
extreme growth of some species, it may be sensible to use low quantities of
CO
when starting the reactor. A pH value reduction of the daily maximum
2
in approx. 0.03 to 0.05 pH steps should be sufficient within the first two
months. A stepwise reduction of the setpoint value to approx. 8.2 will depend
on the measurement of the calcium content. As soon as a calcium content
of approx. 410 mg/l (natural salt water) is reached, a reduction of the setpoint
value is not required any more. Depending on the tank volume and the
calcium requirement, this value will be reached after approx. 2 to 3 months.
Metering time - adjustment of the CO
After opening the CO
valve, the pressure reducing valve should be set in
2
such a way before the start-up that approx. one bubble per second passes
through the bubble counter.
In this case the secondary pressure should be between 0.5 and 0.7 bar. You
may choose between two modes of operation: (1) Timer off: Given this
setting on the pH Controller 7074, CO
) is used to dissolve calcium (Ca
2
) into an almost closed circuit.
3
-Controller-Set 7074) with bottle and pres-
hose and bubble
2
will increase
2
quantity
2
flows into the reactor until the
2
discharged lime water lowers the pH value below the setpoint value. If this
happens faster than within about 1 hour, 10 minutes, for example, you may
either reduce the gas at the bubble counter or set the system to (2) Timer
on. Subsequently, the gas inflow is interrupted for abt. 15 minutes, prevent-
ing an excessive CO
Attention: Check the function of the pump 306 every 2 to 3 months, which
2+
)
can be done by removing the hose 3174.10 in case of immersion depths of
more than 280 mm. In case of an immersion depth of the reactor of less than
280 mm, the movement of the CO
metering process indicates the water delivery of the pump. A check of the
pH electrode is essential in order to prevent a wrong metering process (cf.
Instructions for Use of the pH Controller 7074).
2
Notes concerning the centrifugal pump 306
General aspects
The motor is waterproof; all bearings are water lubricated. Do not run the
pump without water. Before turning the pump on for the first time, please
check whether the voltage corresponds to the voltage indicated on the pump
(230 V / 115 V). When the pump is taken out of operation, it has to be cleaned
and dried, otherwise it will clog.
Maintenance of the centrifugal pump
In case of soiling the mechanical part of the centrifugal pump has to be
cleaned. Please proceed as follows: Unblock the impeller housing by
turning, and remove it. Remove the pump parts as shown in Fig. 7, and clean
them with clear water.
Please keep in mind
The centrifugal pump is not suitable for use in outdoor systems. Operate the
centrifugal pump with protection potential < 30 mA. Do not alter or change the
mains cables. Before maintenance and cleaning disconnect the mains cable.
Do not bend or manipulate the cable nor use it to fasten the pump. In case the
mains cable is damaged, return the entire pump to the manufacturer.
What is to be done, ...
(1) if the pH value of the aquarium drops after refilling the reactor?
-> Due to increased lime buffering, the CO
be reduced or the timer of the pH controller can be switched on.
(2) if at 1 bar the sequence of bubbles of 1/sec. can no longer be
controlled, respectively cannot be set any more ?
-> Please check whether the CO
bar), otherwise fill the cylinder or clean the non-return valve, or replace it,
if necessary.
(3) if the pH value rises, despite of correct inflow of CO
-> Check whether the centrifugal pump is working: Remove the hose from
the pot; the water should flow with a strong current ! If not, disassemble
and clean the pump.
(4)if the maximum pH value of the day is below 8.2 and the minimum
value below 8.0 ?
-> There is too little light and only few photosynthetic processes are taking
hose.
2
place (i.e. almost no algae and no invertebrates)
-> The pH measurement is wrong, because the pH electrode is soiled
or defective, or the calibration carried out with a soiled or old buffer
solution.
-> The water of the aquarium is changed by a buffering substance, which
may be caused by:
cylinder
2
-chemicals which have buffering qualities
-substances which form in the aquarium (monocultures of invertebrates
or algae)
-buffering of the salt water does not exist due to lacking or unsuitable
substances of the artificial sea salt.
Alternative: Short-time addition of calcium hydroxide according to Peter
Wilkens.
Guarantee
Your TUNZE unit carries a guarantee of twelve months after the date of
purchase covering all material and workmanship defects. Defective units
should be returned well-packed, together with the sales slip, to the retailer
or manufacturer.
Exclusion form guarantee
This guarantee does not cover any claims for compensation beyond the unit
itself. Any damage caused by incorrect handling, such as operating the
pump without water, and any technical modifications made by the purchaser,
irrespective of their nature, or any damage caused by connecting the unit to
any other voltage than indicated as well as the use of concentrated acids and
alkaline solutions shall not be covered under the guarantee.
Subject to technical modifications, especially those which further safety and
technical progress.
This product corresponds to the European Directives of Conformity.
11/96
Aquarientechnik GmbH • D-82374 Penzberg • Postfach 1365
11/97
share of the lime water discharged.
2
bubble in the reactor pot during the CO
2
amount at the bubble counter can
2
cylinder pressure still pushes up (> 30
2
2
?
2
5
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