Pool Filter Considerations

by Pool Builders on 07-29-2009 in Articles

This is going to sound redundant: Pool filters, filter out debris and dirt from the water. Without a proper system installed the quality of swimming fun will be greatly diminished. When installing a filter, size does matter, something that wasn't largely understood in the late seventies and early eighties. There are three types of filters available for pools today, cartridge, D.E. and sand systems. Like anything, each one has its own pros and cons. Several factors need to be addressed before deciding which filter is right for you and your pool.

How the Pool Filters Work

First, let's talk about cartridge filters. The cartridge is made of paper and held within a housing unit. As water comes through the filter, the paper catches the dirt while the water moves through it and is sent back into the pool, nice and clean. A cartridge must be replaced every 2-5 years depending on its ability to maintain clear water. These types of filters are recommended for small to medium above ground pools. The smaller size of the pool puts less strain on the filter, which means less maintenance and work for you.

Sand filters are middle of the road systems; they work better than cartridges but not quite as well as D.E.'s. Water comes in through the top of the filter and is pulled down by laterals, which push the water back into the pool. A large section of sand above the laterals captures the debris while the water moves downwards. These filters work best for medium sized, in-ground pools. They don't require heavy maintenance and are relatively inexpensive to fix.

D.E. stands for diatomaceous earth, which is the fossilized remains of diatoms, a type of hard shelled algae. Its abrasive and coarse texture makes it an excellent, natural filtration device. D.E. filters are the strongest of the three and sift dirt and debris out to 3-5 microns (undetectable to the human eye). There is no doubt these are the most effective and efficient filters on the market. The maintenance is more in-depth and repair cost is higher. D.E.'s are best used for large in-ground pools.

After taking in pool size, available space and the funds you have available, picking a pool filter is relatively simple. Enjoy your summer with sparkling clear pool water, thanks to the filter of your choice.

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