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.
Most common of all types are the sand filters. This kind features an in-filter sand bed as its filtration site. Particles which are 20 microns in size will be trapped. Cleaning is done by reversing the flow of water through the unit, and generally the sand can be used for several years. They are a popular choice due to their reasonable pricing and easy operation.
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.
The diatomaceous earth or DE filter offers the ultimate in water clarity and purification, as it has been designed to filter out the most minute particles which are just 3 to 5 microns. Inside the filter is a powdered substrate made from DE, which is a naturally-occurring sedimentary rock with a porous nature that lends itself well to filtration. More work is required to maintain them and they may cost somewhat more, but the speed of operation and efficiency compensates for this.
Whichever type of filter one chooses, it's always best to select a model which is larger than the minimum required for the pool's size. This will cut down on the time needed to spend cleaning the filter. Selecting a system with the lowest amount of pumping to achieve the flow rate is also wise, as this will help reduce operating costs.
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.
Most common of all types are the sand filters. This kind features an in-filter sand bed as its filtration site. Particles which are 20 microns in size will be trapped. Cleaning is done by reversing the flow of water through the unit, and generally the sand can be used for several years. They are a popular choice due to their reasonable pricing and easy operation.
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.
The diatomaceous earth or DE filter offers the ultimate in water clarity and purification, as it has been designed to filter out the most minute particles which are just 3 to 5 microns. Inside the filter is a powdered substrate made from DE, which is a naturally-occurring sedimentary rock with a porous nature that lends itself well to filtration. More work is required to maintain them and they may cost somewhat more, but the speed of operation and efficiency compensates for this.
Whichever type of filter one chooses, it's always best to select a model which is larger than the minimum required for the pool's size. This will cut down on the time needed to spend cleaning the filter. Selecting a system with the lowest amount of pumping to achieve the flow rate is also wise, as this will help reduce operating costs.
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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