Filters

A healthy aquarium depends on maintaining clean water, and doing so requires some means of filtering out the water to remove contaminants and purify the water. Technically, there are three means of filtering aquarium water:

1/ Biological filtration refers to the process by which beneficial bacteria break down ammonia and nitrite and transform them into compound nitrate, which is much less toxic. For beneficial bacteria to thrive, oxygen-rich water is needed, as well as a surface that bacteria can attach to, such as rocks or sand. All aquariums should have some provisions for biological filtration, and with very small fish populations, this alone might be sufficient to sustain the aquarium. However, in most aquariums, biological filtration will be just one method that is combined with others.

2/ Chemical filtration is a process by which chemical additives remove dissolved wastes from the water. The most common method for chemical filtration uses activated charcoal.

3/ Mechanical filtration is what most people think of as true filtration—machinery that removes solid particles from water by circulating water and straining it through some kind of aquarium filter. It is important to understand that mechanical filtration alone is not sufficient since it does not remove or convert ammonia, nitrate, or nitrite in the water. Mechanical filtration serves to remove free-floating waste before it decays into harmful substances, and to be beneficial the filter material must be cleaned or replaced every two to four weeks. In addition to filtering contaminants from the water, mechanical filtration assists inerating the water

Be it a saltwater or a freshwater tank, maintaining ideal water conditions in your tank requires some knowledge about the different types of filter media used in aquariums. The three types of filter media are biological, mechanical and chemical. Here are some details about how each type helps filter your tank.

To effectively maintain an aquarium, a filter should run all the water in the tank through the filter at least four times each hour. When choosing a system, pay attention to what kind of filtration it offers—biological, chemical, or mechanical. Some systems combine the different forms of filtration, to varying degrees of success.

There are five common forms of filtration systems you can choose from in Bangladesh.

Sponge Filters

The sponge filter is fitted over a tube from a power head or air pump. As water is forced through it, bacteria will grow and establish a biological filtration. Sponge filters also provide mechanical filtration, although they clog quickly if there is excess debris. They are excellent for tanks with fry, as the sponge prevents young fry from being sucked through the pump. Sponges are good for a hospital isolation tank, as a sponge from an established aquarium quickly provides the tank with nitrifying bacteria.

When the sponge filters are cleaned, it is important to do so with aquarium water, as tap water will kill the beneficial bacteria that is growing on the sponge.

Prices for sponge filters can range from 100- /-BDT

Power Filters

Sometimes called hang-on-back filters, power filters are the most commonly used type of aquarium filter, largely because they offer excellent mechanical, chemical, and biological filtration simultaneously. The standard power filter hangs off the back of the aquarium and sucks water up through a siphon tube. They are simple to install and easy to maintain. Mechanical filtration is achieved by water flowing through a filter pad or floss. Chemical filtration is provided by the water flowing through an activated carbon filter, and biological filtration is offered by beneficial bacteria that form inside the filter cartridge. Power filters may be combined with a biowheel to provide increased biological filtration.

Power filters range in price from 280- /-BDT

Canister

Canisters are powerful mechanical aquarium filters best suited for medium- to large-sized tanks—those larger than 40 gallons. Because canister filters are positioned outside the tank, they may be easily concealed behind or beneath the aquarium stand. These large units provide very good mechanical, chemical, and biological filtration. Canister filters are pressurized to force water through the filter media, rather than allowing it to flow past it as other filters do. This makes them ideal for heavy loads. Adding a biowheel increases the biological filtration capacity of the aquarium filter. On the negative side, canister filters are difficult to take apart for cleaning and maintenance, and they are difficult to get primed and restarted afterward.

Canister filters are very good for saltwater aquariums or those with many living plants. Costs can range from -

Hang on back (HOB)

A hang on back (HOB) filter is a type of filter for your aquarium that hangs on the back wall of your tank. They are classified as simple external filters. However, they are usually not as bulky as canister filters and can be used in a wider range of tanks.

Most HOB(hang on back) filters need to be what some call ''primed''. This means you need to put water from inside the tank INTO the water storage area in the filter. These filters have a motor that relies on the water for cooling because it's a magnetic system. The motor is also not strong enough to suck the water in

Hang on back (HOB) filters range in price from - /-BDT

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popular filter brands in bd:-

Sunsun
DoPhin
Sobo
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