How is the balance for breathing in and breathing out made possible in an artificial ecosystem and yet have a semi-natural atmosphere for the presence of live freshwater fish? Like in any ecosystem, to inhale is to take in oxygen integral to the functions of other organs and to exhale is to take out carbon and other waste elements from our body. Being a house for fish of any species, an aquarium needs functional filters and filtration methods beneficial to organisms within the fish tank, either when one uses organic or manufactured items and equipment and accessories in their tank with the fish. There are three known major filtration systems for freshwater aquariums: Biological, Mechanical and Chemical. To study the how-to of each system and utilize them in the right manner is very crucial in maintaining your own aquarium at home or in the office. Manufactured filters nowadays are especially created for any of these three main types of filtration.

There are three basic types of filtration I will discuss here with a little information for each, which are mechanical filtration, biological filtration and chemical filtration. I especially like mechanical and chemical filtration which are very popular.

Filters and filtration systems work in accordance to the principle of nitrification and denitrification.

Nitrification is the scientific process of ammonia conversion to nitrate. Ammonia, later reduced to nitrate by a bacteria called nitrobacter, is produced by fish as they breath and also from excess food particles that later decayed in the tank.

Both ammonia and nitrates are toxic to fish as the nitrates are consumed by plants and algae.

In the problem with lack of oxegen flow in the aquarium, you can use dentrification which is the scientific process of converting nitrates to nitrogen gas which can be used to enhance your fish tanks ecosystem.

Aquariums can have many different types of filters like a sponge filter, under gravel filter, canister filter or standard power filter.

A sponge filter either with air pumps or small water pumps, acts as a magnet for bacteria. This filter allows positive bacteria to grow within its pores. Although this kind of absorbed bacteria is important especially for fish breeding, it can be destroyed by a possible power outage.

An filter that operates based on a push-pull manner is the under gravel filter which promotes the cycling of oxegen inside the tanks water. Through a bed of gravel at the bottom of the tank, water is pulled down while uplift tubes suck in the water and force the water into the tube and back up to the surface of the tank. Another version of this and a better type of filter is the reverse flow under gravel filter, where water is pulled from the top of the aquarium through a tube where there is more oxygen, and then pushed down into an embedded uplift tube, and allowed to flow freely back to the surface out of any tube, through the gravel.

A canister filter is another popular filter that acts as by absorbing positive bacteria within the aquarium until it can build a colony of positive bacteria. An advantage of the canister filter is that it does not need to be cleaned or removed and can be performed inside of the tank without any impact on the fish.

There is also the standard power filter, which is utilized by both biological and mechanical filtering systems, like the canister filter. It is a good example of recycling materials by the use of floss-padded disposable cartridges. The pad works by attracting nitrifying bacteria, and when it gets full you simply discard it from the aquarium and replace it.

Biological Aquarium Filtration provides stability and proper detoxification that is badly needed by aquariums. Canister filters, under gravel filters and sponge filters are a good way to do this as well as a regular water change. The method is good in preventing the proliferation of poisonous waste ammonia.

Mechanical Filtration Systems on the other hand, provides clear water freed of small debris, by pumping the water through fine materials. This is done through the use of canister filter, standard power filter, wet or dry filters and so-called floss or pleated cartridge filter. By trapping debris in the gravel, mechanical filters can do most of the hard work of cleaning the aquariun water, but the gravel in the tank will then need regular siphoning to remove the trapped particles in the gravel.

Another popular filtration type is chemical filtration.

Chemical Filtration provides the reduction of microscopic elements and compounds in water thru chemical breakdown, that may normally cause the filter to become yellowish and clogged up over time. Some particles dissolved in water cannot be removed by mechanical filters. Thus, this kind of filtration can thoroughly clean your aquarium of unwanted toxins over the standard mechanical filtering systems.

Certain types of filters like cannister and power filters can be doped with carbon and other elments to isolate various toxins includimg fish waste as well as copper and chlorine from the water and keep them away from the fish; iodine, mercury, cobalt, iron, water medications like methylene blue and malachite green; sulfa drugs and organic dyes among others. in the same way, phos-zorb,nitra-zorb and ammo-chips, absorb chemicals and are very effective at removing ammonia, phosphates and nitrates respectively.

With all chemicals, you should first consult an aquarium specialist for the proper use of any chemical type of filter and to avoid after-effect complications to your fish tank.

Considered one of the most important parts of an aquarium, one should choose a filter which has at least a four times per hour flow rate rating. Nowadays, there are many interesting designs available in local and international pet shops and online shops, and there are also many aquariums equipped with built-in filtration system utilizing all three popular types of filtration. The more advanced filters do come with a higher price.

Regular maintenance and monitoring of your aquariums filter will actually do wonders for your tank water. Life inside the aquarium is highly dependent on the owners and their knowledge of filtering the water in their aquarium properly and on the regular, daily basis.

Your pets will remain healthy and resilient unless of course there is evidence of a biological imbalance in the aquarium due to neglect, lack of information or lack of regular maintenance.

The oxygen and nitrogen cycle is a natural process and a hobbyist should see to it that this is working properly in their aquarium.

Mishaps and failers can and will happen and aquarium owners need to be on the lookout daily for anything out of the ordinarywith their filter and filtration system and do it on the daily basis.