Installing an Internal Power Filter for Aquarium Do Know It Aquarium Internal power filters are suitable for the small aquarium. When servicing the tank, rinse the foam with tank water (removed when doing the ... 72 72

Installing an Internal Power Filter for Aquarium

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Internal power filters are suitable for the small aquarium. When servicing the tank, rinse the foam with tank water (removed when doing the water change). This way, you remove fine, clogging debris, but retain the beneficial bacteria. What do you know about internal power filter and how to install one for your aquarium? Here we go!

Image of internal filter is working inside aquarium
An internal filter is working inside aquarium

There are two basic types of power filter: internal and external, which both work on the same principle of taking in water, passing it through the filter medium, and returning it to the aquarium. Movement of the water is generated by an electrical motor driving an impeller. The purpose of the filter medium is to provide a large area that beneficial bacteria can colonize. They break down much of the Internal filter waste matter produced by the fish (read more about nitrogen cycle). Materials, such as activated carbon, can be incorporated to remove other toxic substances. The system we demonstrate uses an internal filter for ease of installation and operation and cost efficiency, but you could use an undergravel, canister, or external power filter instead.

Structure of internal filter

Hints and tips

Check that the filter cable will reach the electrical source. Make sure you have easy access to the filter, as you will need to remove it completely from the carrier to service it. Stock up with spare suction cups and also a spare foam insert.

Image of
An internal filter

  1. A submersible pump provides the power source. It may or may not have a venturi to aerate the water.
  2. The foam cartridge houses the beneficial bacteria.
  3. The plastic barrel has an internal divider to allow good water flow. This complete unit pushes onto the pump.

The venturi effect

As water is pumped back into the tank, it can also be aerated by a venturi pipe. This accelerates the water flow and draws in a stream of air from above the surface.

Unpacking filters

Although internal power filters usually come with foam inserts, check that these are present. Remove any plastic packaging that may be around them or they will not work. Put the filter together as shown on this page.

Below: This internal power filter draws water in at the base of the unit and passes it through a block of filter foam. Models vary slightly, but the principle is the same.

  1. You can adjust the amount of air added to the returning water.
  2. Water returns to the aquarium through aperture.
  3. This foam block is colonized by beneficial bacteria. You can remove it easily for servicing.
  4. This unit houses the submersible motor; attach it firmly to the aquarium glass.
  5. Water is drawn in at the bottom of the unit. Make sure the passage of water is not restricted by any tank decorations.
Image of
A sample of internal filter

Installing an internal power filter

Safety first

Never run the filter pump without water in the tank, as it will burn out. If you want to test it, submerge it in a bucket of water.
Unpack your filter and read the manufacturers instructions carefully, as different models vary slightly. Assemble the filter as instructed. Attach the suction cups supplied to the outside of the filter or carrying frame. You may need to wet them to get them to stick to the glass.

Carrying frames make removing the filter unit for cleaning and maintenance an easy procedure. Attach the carrier to the rear corner of the aquarium, pressing it firmly against the glass. Be careful when inserting the filter into the carrier. Do not force it or you may break the carrier.

Image of
Install an internal filter

  1. Position the filter with the nozzle facing outward. Direct the outflow across the diagonal of the aquarium.
  2. Check with the manufacturer’s instructions and position the filter head at or just below the water surface.
  3. Allow a space between the base of the filter and the substrate to avoid the accumulation of dirt and debris and to allow free passage of water into and around the filter canister.

Previous article: How to Choose and Prepare Aquarium Substrates
Next article: Heating Aquarium Water with a Submersible Heater
5 Aquarium: Installing an Internal Power Filter for Aquarium Internal power filters are suitable for the small aquarium. When servicing the tank, rinse the foam with tank water (removed when doing the ...

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