Alternate new media introduction
Filter media should be changed at the regular recommended intervals. However, not all media should be replaced at one
time. Stagger filter media changes so there is always old filter media in the filter. This enhances replacement of important
bacterial colonies lost with discarded media. It promotes rapid seeding for continued bacterial action within the filter.
To further heighten the bacterial filter, use Nutrafin Cycle Biological Aquarium Supplement once a week to institute,
supplement and promote the correct beneficial bacteria and to encourage them to become the dominant strains within
the bacterial filter.
WARNING
The power supply cord of this appliance cannot be replaced; if the cord is damaged, the appliance
should be discarded. Disconnect the plug from all appliances inside the aquarium before putting hands
in the water. The pump must never be allowed to run dry.
Impeller Maintenance
Important: these motor units contain an Impeller Fan with Ceramic Shaft. This kind of
shaft is more resistant to wear and tear but it is fragile. Special care is recommended
during maintenance.
The impeller well has an effective self-cleaning feature. Regular monitoring for dirt
build-up can help lengthen the life of the impeller and motor unit.
To access the impeller, remove the impeller cover by squeezing the two tabs
The Magnetic Impeller should be cleaned when necessary. To remove it, gently grasp the
impeller fan and withdraw it from the well and rinse off under clean water. Check that the Impeller Well is clean.
If necessary, use a Fluval Cleaning Brush to clean it out. Then reinsert Impeller.
When maintenance is complete, place the Impeller Cover (X) into its seat again and lock it in place by pressing the tabs
until a "click"
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is heard (make sure that the Impeller Shaft is properly reinserted into the shaft support ring of the
Impeller Cover).
NOTE: It is not recommended to remove the Ceramic Shaft Assembly unless it breaks.
(Models 104 and 204 only)
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Specific notes concerning Fluval 104 and 204
The Fluval 104 and 204 models come with a ceramic shaft, which is attached to its yellow plastic support (Ceramic Shaft
Assembly). It is not recommended to remove the Ceramic Shaft Assembly unless it breaks. To remove the yellow Ceramic
Shaft Assembly from the Impeller Well use the provided Ceramic Shaft tool (Z)
To reinsert the Ceramic Shaft Assembly: place the Magnetic Impeller (W) on the Ceramic Shaft Assembly and reinsert
them into the Impeller Well by pushing gently on the Impeller Fan to lock them in place.
Specific notes concerning Fluval 304 and 404
The Fluval 304 and 404 models come with a Ceramic Shaft fixed on the bottom of the Impeller Well by a Rubber
Support. The Ceramic Shaft can be easily extracted and reinserted by hand, paying close attention to the Rubber
Support to ensure that it has not come out of its seat
proper alignment.
The Impeller will wear over a longer period of time. Replacement parts may be ordered from your local pet dealer
(see "Fluval Spare Parts" list).
Fluval Media Selection
Types of Filtration
Mechanical – Removal of waste particles and solid debris through mechanical strainers.
Biological – Breakdown and elimination of organic toxins - ammonia and nitrite - through bacterial action.
Chemical – Active change of water characteristics through the use of chemical compounds.
click!
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.
(Models 304
and 404 only)
Warning: These motor units
incorporate a ceramic impeller
shaft. This shaft is permanently
attached to its plastic holder for
safe handling. The shaft is brittle
to lateral pressure. Take extreme
care when handling.
Do not try to bend the shaft.
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and
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.
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. Note: Be sure to reinsert the impeller cover to ensure
Fluval Filtration Area
Section 1 – The Foam Screen Frame
Fluval offers a wide variety of filter materials, some capable of performing more than one job. Fluval 4
provide automatic mechanical particle removal with the Foam Screen Frame. It is extremely important to remove wastes
before they enter the more delicate media in the Media Baskets.
Section 2 – The Stack of Media Baskets
The true power of the Fluval System resides in the versatility of the media choices available for the Stack of Media Baskets.
This section is meant as more of a guide than a definitive manual. Versatility and aquarist choice of media should be the
main criteria. However, it is best to follow some or all of the following guidelines. The choice of media should follow a
number of criteria.
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Bottom Media Basket
click!
Media that continues the mechanical capture of waste should be in the lowest media basket, purifying and removing
particles before they can clog delicate pores of biological or chemical substrates. Fluval Media such as "Pre-Filter",
"Carbon" and "Zeo-Carb" can be used to further screen small particles from the water. Pre-Filter is inert, acting solely to
create a screen. Carbon removes dyes, medications and solubilized wastes that a simple screen cannot. "Zeo-Carb"
removes ammonia from the water. This is often used in beginning set-ups to keep initial spikes lower than would
occur naturally.
Middle Media Basket
The middle media basket is useful for chemical modifications of the water. "Peat Fibre" and "Peat Granular" are an
example of this. An important consideration for media placement is the type. Peat Fibre consists of strands which can rise
up and wrap around an impeller. For this reason, any media that is string-like in nature should be kept below other filter
media. The middle chamber can begin the biological reduction process as well. Many media types will serve as both
mechanical and biological, offering an excellent place for beneficial bacteria to populate. Even many chemical compounds
will support colonies of bacteria. With the main mechanical purification of the water stream occurring in the Foam Screen
Frame and below the second media basket, it is normal to load additional biological media into the middle media basket.
"BioMax", extra "Carbon" or "Ammonia Remover" are quite commonly used in the mid-media basket. This is also the
area where more exotic media chosen for a specific application can occur.
Top Media Basket
The highest basket receives the purest water stream, making this the proper place for dedicated biological media.
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"BioMax" provides optimal biological power in a very compact ring. With the multitude of pores perforating the surface
and internal matrix, "BioMax" is an ideal substrate for the top media basket. It also provides a trap to capture any loose
strands that might affect the operation of the impeller.
FLUVAL
FILTER
MEDIA
Foam - FS
Fluval Foam Screen Insert – 2 Pack
A-220, A-222, A-226
The construction of the Foam inserts allows large waste capture in the Foam Screen Frame, to eliminate
most solid wastes before they can clog biological and fine mechanical media. The numerous pathways
that the water is forced to travel through as it flows through the foam also increase the filtering efficiency.
Although not permanent, the foam inserts can be rinsed and reused a number of times before
replacement.
generation filters
th
H
FS
M
L