UKUK
Dear Customer,
Congratulations on
choosing your new highly
ecient, easy to maintain,
Tetra Aquarium Filter.
The Tetra IN plus Internal Filter
not only mechanically and
biologically filters the water but
also creates a natural water flow
enriching the aquarium water with
oxygen. Furthermore the Tetra IN
plus is quickly and easily adjusted
to perfectly suit the requirements
of your aquarium. Please read
the instructions carefully, before
installing your new Tetra IN plus.
Tetra IN plus Internal Filter
A. Suction Cups
B. Mounting unit
C. Air intake tube
D. Adjustable venturi air intake
E.
Multidirectional water diuser
F. Motor casing
G. Flow rate adjuster
H. Double filter cartridge
I. Split filter media
J. Double flow inlet
K. Split foam carrier
Instructions
Preparation for use (see fig. 1)
Before installing the filter, attach
the enclosed suction cups to
the back of the mounting unit.
Attach the air intake tube to the
adjustable venturi air intake.
Installation and operation (fig. 2)
Using the suction cups, attach the
filter at your chosen position to
the inside of the aquarium glass,
making sure that the top of the
water diuser is placed maximum
1 cm or less below the surface of
the water so that the inlet end of
the air intake tube is well above
the water surface.
To start the filter simply plug it in!
Adjustment of water flow (fig. 3)
Depending on stocking levels and
the size of your aquarium it may be
necessary to adjust the water flow
through your Tetra IN plus.
To increase the water flow,
turn the adjuster Clockwise. To
decrease the water flow, to turn
the adjuster counterclockwise.
Adjustment of air flow (fig. 4)
The larger the aquarium and the
number of fish the greater the need
for oxygen in the water. Using the
adjustable venturi air intake the
concentration of oxygen can be
set to your requirements.
To increase the air flow, turn the
adjuster towards the back of the
filter. To decrease the flow, turn
the adjuster towards the front of
the filter.
Adjustment of flow
direction (fig. 5)
The multidirectional water
diuser produces a water flow
that corresponds to those found
in the natural environment of
your fish. To adjust the direction,
simply rotate the nozzle through a
maximum angle of 180° to suit your
requirements.
Care and Maintenance
IMPORTANT! Always disconnect
the filter from the electrical supply
before removing it from the water
or carrying out any maintenance
upon it!
Cleaning and replacing the foam
filter media (figs. 6 & 7)
During use the foam filter media
will eventually become clogged
with debris which may reduce
both the air supply through the
venturi air intake and the water
flow through the filter. Regular
cleaning and/or replacement of
the filter foam on a regular basis is
necessary to ensure that the filter
remains working eciently.
1. Cleaning the foam filter media
Remove the filter cartridge
from the mounting unit. It is not
necessary to remove the mounting
unit from the aquarium during
normal maintenance (fig. 6).
Remove the filter cover and with it
the foam filter media (fig. 7). One
of the two foam filter media should
then be rinsed in water from the
aquarium.
Foam filter media should never
be cleaned using untreated tap
water as the chlorine present will
kill useful filter bacteria growing
on its surface!
2. Replacing the foam filter media
The foam filter media can be
cleaned 2 to 3 times and reused
before it requires replacement.
Replacement filters are available
from your local retailer.
When placing the foam filter media
into the cartridge it is important to
ensure that the foam is centered
on the foam holder (see fig. 7)
In models that contain two
double filter cartridges, only
the lower cartridge should be
changed at any one time as
per the following instructions;
(I) Remove the lower foam filter
media and discard.
(II) Remove the upper double
Tetra GmbH, Herrenteich 78
D-49324 Melle, Germany
www.tetra.net
2 Years Guarantee
Tetra guarantees that your Tetra IN
plus will be repaired or replaced-
free of charge for two year from the
date of purchase if it fails to work
because of faulty material or work-
manship.
This guarantee does not cover nor-
mal wear and tear, nor any deterio-
ration suered through overloading,
improper use, negligence or ac-
cident. Similarly any modifications
made by the purchaser to the appli-
ance will cause the guarantee to be
null and void.
Please keep your receipt as proof of
purchase. The guarantee does not
cover improper use, normal wear
and tear or any modification made to
the appliance. In case of complaints
please contact your local retailer or
address to Spectrum Brands (UK)
Ltd., Fir St Failsworth, M35 OHS
Manchester, United Kingdom.
SAFETY FIRST!
Always isolate the unit from the
mains electricity before carrying
out any maintenance. The control
unit of this filter cannot be replaced.
If this is damaged the filter
must no longer be used. This
Tetra lN Internal Filter is only
designed for use in tempera
-
tures which do not exceed 35°C.
The supply cord cannot be replaced.
If the cord is damaged the entire
appliance must no longer be used.
This appliance is not intended for
use by persons (including children)
with reduced physical, sensory or
mental capabilities, or lack of ex
-
perience and knowledge, unless
they have been given supervision
or instruction concerning use of the
appliance by a person responsible
for their safety. Children should be
supervised to ensure that they do
not play with the appliance.
For further information on fish
keeping please contact: Spectrum
Brands (UK) Ltd., Fir St Failsworth,
M35 OHS Manchester, United
Kingdom.
www.tetra.net
Technical Data
Model Flow rate in
Litres/hour
Aquarium size
In litres
Number of double
Filter cartridges
IN 300 plus 150 – 300 10 – 40 1
IN 400 plus 200 – 400 30 – 60 1
IN 600 plus 300 – 600 50 – 100 2
IN 800 plus 400 – 800 80 – 150 1
IN 1000 plus 500 – 1000 120 – 200 2
filter cartridge and remove the
foam filter media. Place this into
the lower filter cartridge and
reinsert into the mounting unit.
(III) The new foam filter media
should then be placed into
the empty upper double filter
cartridge, reinserted into the
mounting unit and the filter
restarted.
Replacing only one foam filter
media at any one time ensures that
at least 50% of bacterial activity in
the filter is preserved ensuring fast
and ecient bacterial maturation
of the new foam filter media.
Cleaning the impeller unit (fig. 8)
The impeller unit should
be cleaned each time the
foam filter media is cleaned
or replaced. Due to the Tetra
Internal Filter’s innovative design
this can be done quickly and easily
as the filter mounting unit remains
in the aquarium.
The impeller unit is easily removed
from its housing as shown in
figure 8.
Do not use abrasive or caustic
cleaning agents when cleaning
the impeller unit.
If eciency is impaired, clean
the filter.
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