An internal filter is designed to sit in the rear corner of the aquarium with the outlet just below the water surface. Some tanks, such as those in the Juwel range, come with fitted internal filters. Water is sucked in at the bottom of the filter and drawn through a coarse sponge that traps debris.

Are internal aquarium filters good?

Internal filters are better for small to medium sized tanks with small to medium sized fish. External filters may have higher running costs than other types of filter because when you change the media, you will have to buy more of it each time, but they will generally go for longer periods of time before clogging.

Are internal filters better than external?

External filters are larger and more powerful than most internal filters and can hold a lot more media, offering better cleaning and supporting more fish. The superior power of external filters makes them suitable for large aquaria; heavily stocked aquaria like African cichlid tanks; and large fish.

Do I need an air pump if I have a internal filter?

An air pump is NOT required for this purpose, as long as your tank maintains adequate water movement together with surface agitation. This is generally the case if external (e.g., box or cannister) filters are used. Second, air pumps can be used to force water through a filter (e.g., sponge or corner filter).

Where does the internal filter go on a fish tank?

An internal aquarium filter should be placed at the bottom of a tank to ensure proper filtration. This is the best position for an internal aquarium filter because it will have all the water going through it and therefore will have a better chance of cleaning the water.

How often should I clean my internal filter?

Clean your mechanical filter once every month, but let the chemical and biological filters go for a while longer before you clean them. In fact, I would recommend you only clean your biological filter when its visibly clogged or slow, to help keep beneficial bacteria intact.

Is an internal filter enough?

Although fine for basic use, most internal filters house a relatively small amount of media and aren’t very versatile. They tend to need more maintenance than externals and, arguably, they aren’t quite as good at providing top-notch water conditions, especially when you have a lot of fish in the aquarium.

Can internal filters be submerged?

Internal filters must be fully submerged to work correctly. They work best near the substrate, though if the air pump is separate, it is usually situated somewhere outside the fish tank. For this reason, most sponge filters come with suction cups to help hold the unit in the desired corner of your aquarium.

Do filters clean fish tanks?

The short and definitive answer is yes! A filter basically cleans the water of debris, removes the toxic buildup of ammonia and nitrates, and aerates the water so your fish can breathe. Which, unless you want an aquarium full of dead fish (or one filled with plastic fish), is a very good thing, indeed.

Leave a Reply