Central to the efficient operation of a swimming pool, a filter is necessary when it comes to keeping the water clear and safe to swim in. Debris which collects in and on the water is removed through one of several filtering processes, reducing conditions which promote the growth of algae and bacteria. Whether one has an above-ground or inground pool, there are three main types of pool filtration systems, and each comes with certain advantages.
The water in a swimming pool typically cycles through the filter several times every day. Although the techniques vary from one filter design to the next, they all basically operate by pumping the water through a barrier which traps particles of dirt and such, removing it from the swimming pool. They differ in terms of price, care and maintenance, and in the benefits they provide.
What is referred to as the filtration "system" includes both the filter itself and the pump. The latter pulls water from the pool into the former, where contaminants are filtered out, then the clean water is pumped back into the pool. Well-made systems can last for years, and ultimately they will help reduce the time and money one spends on the pool's upkeep.The basic types of filters are the cartridge, sand, and diatomaceous earth (DE) models, which are all compatible with inground and above-ground pools.
Sand filters are the most common type. Water is filtered through a sand bed inside the filter which traps debris with a size of 20 microns. They are easily cleaned by simply running water through them in the opposite direction, and the sand can be used for several years before it will need to be replaced. Affordable and easy to operate, they are a popular choice with many who own pools.
Another affordable, low-maintenance alternative is the cartridge filter. The filtering element in this design consists of a removable cartridge which can remove particles as small as 10 to 15 microns. Economical, they have the added advantage of being easy to maintain by using a garden hose or a filter cartridge cleaner to clean them out. In general a new cartridge is needed for each swimming season.
DE or diatomaceous earth filter systems offer the ultimate in speed and efficiency. They can eliminate the very smallest particles of debris which are only 3 to 5 microns in size, and work quickly to produce crystal clear water. The substrate contained within them, known as diatomaceous earth, is a porous, natural rock sediment which has been ground into powder. While typically more expensive, this approach does offer superior results.
Independent of the type of filter one selects, it is best to ensure that it has a larger capacity than the recommended minimum. This will mean less frequent cleanings are needed. A design with minimal pumping action is also desirable, since this means money saved on the monthly power bill.
Ultimately, it is a matter of personal preference. Users who greatly value having ultra-clear water, will be best served with a DE filter, while those who are more concerned with ease of use, will likely prefer a cartridge or sand filter for its relatively simple maintenance.
The water in a swimming pool typically cycles through the filter several times every day. Although the techniques vary from one filter design to the next, they all basically operate by pumping the water through a barrier which traps particles of dirt and such, removing it from the swimming pool. They differ in terms of price, care and maintenance, and in the benefits they provide.
What is referred to as the filtration "system" includes both the filter itself and the pump. The latter pulls water from the pool into the former, where contaminants are filtered out, then the clean water is pumped back into the pool. Well-made systems can last for years, and ultimately they will help reduce the time and money one spends on the pool's upkeep.The basic types of filters are the cartridge, sand, and diatomaceous earth (DE) models, which are all compatible with inground and above-ground pools.
Sand filters are the most common type. Water is filtered through a sand bed inside the filter which traps debris with a size of 20 microns. They are easily cleaned by simply running water through them in the opposite direction, and the sand can be used for several years before it will need to be replaced. Affordable and easy to operate, they are a popular choice with many who own pools.
Another affordable, low-maintenance alternative is the cartridge filter. The filtering element in this design consists of a removable cartridge which can remove particles as small as 10 to 15 microns. Economical, they have the added advantage of being easy to maintain by using a garden hose or a filter cartridge cleaner to clean them out. In general a new cartridge is needed for each swimming season.
DE or diatomaceous earth filter systems offer the ultimate in speed and efficiency. They can eliminate the very smallest particles of debris which are only 3 to 5 microns in size, and work quickly to produce crystal clear water. The substrate contained within them, known as diatomaceous earth, is a porous, natural rock sediment which has been ground into powder. While typically more expensive, this approach does offer superior results.
Independent of the type of filter one selects, it is best to ensure that it has a larger capacity than the recommended minimum. This will mean less frequent cleanings are needed. A design with minimal pumping action is also desirable, since this means money saved on the monthly power bill.
Ultimately, it is a matter of personal preference. Users who greatly value having ultra-clear water, will be best served with a DE filter, while those who are more concerned with ease of use, will likely prefer a cartridge or sand filter for its relatively simple maintenance.
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