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External Aquarium Filters and Tetra Ex 800 Plus Features

In order for the water in the aquarium to always be transparent and suitable for fish life, it needs constant cleaning. Purification is carried out using various filters – bottom, internal or external. The type of filtering device is chosen based on the volume of the aquarium and the number of inhabitants.

For large aquariums, the Tetra Ex 800 Plus external filter is well suited.

Properly selected filter allows you to create the desired ecosystem, which favorably affects all aquarium inhabitants

The name of the external filter speaks for itself – the filter unit is located not in the water, but next to the aquarium, outside. To preserve the aesthetics of the room, external filters are placed in a lockable cabinet under the aquarium.

External filtering devices work according to the following principle: water from an aquarium is pumped through a suction tube and a hose into a filter, where it passes through filtering material, and after cleaning it returns to the aquarium.

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The advantage of external filters over internal filters is the possibility of multi-stage water purification. In external devices, water undergoes these types of cleaning:

  • Mechanical – water passes through a fine-celled sponge, which retains the smallest particles of dirt.
  • Biological – additional compartments of the apparatus are filled with biomaterials, which serve as a substrate for the reproduction of beneficial bacteria. Without these bacteria it is impossible to maintain the normal biological balance of aquarium water, beneficial microorganisms affect its hardness and acidity.
  • Chemical – special compartments are filled with adsorbing substances (activated carbon, ion exchange resins). Adsorbents absorb toxins resulting from the vital activity of aquarium inhabitants, as well as medicinal substances that remain in the water after treatment of fish.

Novice aquarists are faced with a difficult task at the time of choosing a filter: it is difficult for them to decide which type of filtering device to choose – external or internal. Internal filters are less noisy in operation, do not cause difficulties during installation and cost much less external devices.

But external filters have several undeniable advantages:

  • There is no limit to the volume of the water to be purified: outdoor units are suitable for large professional aquariums;
  • external devices do not affect the temperature of the aquarium water, whereas internal devices increase it due to the heat dissipation of the pump;
  • the possibility of combining external cleaners with auxiliary mechanisms – UV sterilizer, aeration system;
  • external filtering devices do not take away the useful area of ​​the aquarium, do not spoil its decoration.

The most important criterion for choosing a water treatment device for your tank is its power and performance.

The choice of external filter should be based on the characteristics of the aquarium. Before buying it is desirable to study the parameters of the models, offered in stores.

Time spent studying filtering devices will make the right choice.

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