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Atman CF-1200 external filter

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Atman CF-series external aquarium canister filters are second generation filters that have improved features over the AT-series. These are well made aquarium filters with powerful motors, solid construction and reliable operation. Suitable for both fresh water and marine aquariums (ceramic impeller shaft).

Atman CF-filters are equipped with a starter pump and taps in both hoses. Filter material is placed in removable baskets compatible with all material types. Incoming water flow is directed to the bottom of the canister and forced to go through the filter baskets. The flow channel is secured with rubber gaskets.

The filter set is supplied with a selection of alternative spray bar parts for different applications.

There is a complete line of spare parts available for Atman aquarium filters.

NOTE! The filter material capacity given in the technical details is the actual amount of filter material that can be fitted in the baskets, not the nominal canister volume. It should be noted that the canister volume, which most manufacturers announce, is not the same as the true filter material capacity, which is usually only 50-70% of the nominal volume depending on the filter design. For example, CF-600 has a nominal canister volume of 4,8 liters, but the actual filter material volume is 2,8 liters.

External filter’s suitable flow power depends on the situation. The recommendable nominal flow power is usually 3-4 times the aquarium water volume per hour. It should be noted that if relatively strong water circulation is desired, it can be arranged more effectively with additional stream pumps or internal filters, not with the external filter itself. Therefore, external aquarium filters can usually be evaluated more conveniently by their filter material capacity, which is more important to the actual water purification than the flow power.

Technical specifications:

  • Power: 19W
  • Flow power:1100 l/h
  • Maximum lift: 1,75 meters
  • Filter capacity: 12 liters
  • Hose diameter: 17mm
  • Size: 26*26*47(57)cm

Each filter has three roles in a planted aquarium. In order of importance:

It is the most important! Toxic and algae-causing ammonia in the aquarium must be decomposed. As fast as possible. Billions of bacteria growing in the filter convert ammonia into nitrite and then nitrate.

Nutrients (plant food and CO2) must reach the plants. Solid decomposition products should be kept afloat. Good performance is essential.

Solid decomposition products must be physically removed from the aquarium and decomposed in a filter or removed during cleaning.

For a filter to fully perform all three roles, it must meet several criteria. Ideally suitable to have a bucket of the right size to store the right amount of filter media. The filter material contained in it must be of adequate quality and variety. The pump in the filter must have sufficient capacity. The filter should be easy to clean so that the cumbersome process does not deter the aquarist from regular maintenance. Plus, the filter needs to be reliable; no one wants to flood a living room or office due to a cracked tap or joint.

Read more about our filter guide.

More Information
Name Atman CF-1200 external filter
SKU 999675
EAN 5994460022915
Manufacturer Atman

Our main shipping provider - GLS is only delivering our packages up until a certain weight. In some extreme cases - involving shipping of big aquariums, furniture - we will calculate a custom shipping cost, after receiving your order. We will only ship the purchased products after you have confirmed this shipping cost with us.
Please be informed, we charge an extra 10 EUR / aquarium on all aquarium orders for special packaging and care within the shipping fee.

Our goal is to deliver the plants as quickly as possible to your address, so we are making regular (two times per week) orders to our manufacturers and will send you the fresh plants with GLS as soon as they arrive to us. We also have a uniquely high stock, with hundreds of plants. Please read our terms and conditions.

We would like to inform you that according to the EU regulations we are not allowed to ship live animals or dangerous goods (such as CO2 bottles in example) through our delivery partners. Please note that these can only be picked up at our store. The list of the dangerous goods on sale by Green Aqua can be found here.

Please protect your purchase by always inspecting the package right after delivery. In case of visible damages on the exterior of the package you will need to sign a written damage form IN THE PRESENCE of the delivery agent! We can only guarantee replacement or resending of any goods if a written damage form or claims form is filled at the time of the delivery! With seamlessly undamaged packages on the exterior, you have 7 days to report any missing or damaged goods from the interior of the package.

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