Internal Aquarium Filters

Internal corner filterInternal aquarium filters represent only one of the many choices of filters that are available for the fish-keeping hobby.  Choices of aquarium filters include, but not limited to, internal filters, wet dry filters, canister filters, undergravel filters and an entire assortment of home made filters and protein skimmers. This article concentrates mainly on internal filters including power filters, box filters, sponges and the like.

Typically, an internal filters is used in smaller tanks.  They are submersible and are run either by air bubbles or a powerhead or a powerhead style motor.  Filters such as an undergravel filter are just as the name implies, under the gravel or substrate with a lift tube or lift tubes depending on the size of the tank.  The lift tubes have either an airstone or a powerhead to create water flow from the tank through the substrate or gravel and then back into the tank after being filtered.  Other internal filters include power filters, which usually have the ability to not just mechanically filter the tank, but are able to biologically and chemically filter the water as well.

An internal filter will do a good enough job at filtration in fresh water fish tanks that are small (less than 30 gallons) and don’t have a huge bioload, i.e. too many fish or constant overfeeding.  The aquatic habitat that includes over stocking or overfeeding usually needs an extra internal powerheadexternal filter and a slap on the wrist of the aquarist that decided to do that to their fish.

It’s always amazing to see people knowingly put too many fish in their tank and then wonder why they end up with diseases, fighting fish and horrible water quality.  Those aquarists should be put in a small room with way too many people with bad hygiene and see if they still think over crowding is a good idea.  Though that sounds a little gross, it is what the fish are going through.  Once a person decides to have an aquarium, they need to realize that whatever they put into that aquarium, fresh water or saltwater, that those fish are completely dependent on you to maintain their health.  They can’t clean up after themselves.

That rant is over.  Back to the internal aquarium filter.  Many new fish tanks, especially the small “starter kits” come with most everything that u g filteryou might need to begin the hobby including a small internal or external filter.  It’s important to decide early on what kind of fish that you would ultimately like to keep in your tank.  Knowing this and with a few inquiries from the pet store or fish store, you will be able to determine if the “starter kit” has sufficient filtration for your needs.  It is really hard to over filter a tank, but it is very very easy to under filter.  Under filtering leads to poor water quality, unhealthy stressed fish and sometimes a significant loss in the wallet when that new expensive fish dies.  Think ahead about what you might need, spend a little extra on the filter that will be right for your tank, go slow and you will be able to enjoy watching your fish enjoy themselves in a stress free environment.  Money spent setting the tank up properly with the right equipment will save you money and headaches in the future.

Summary
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Internal Aquarium Filters
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Many small tank starter "kits" utilize and even include small internal filters for the health of your fish. Here, you will find some basic info for your particular situation.



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