Pool Filters

View Sand Filters

Pool filters with sand filters are one of the most demanded options by customers. In this case, the filtering material is sand.

We must bear in mind that sand is an agent commonly found in nature. Sand has a great filtering capacity for water, so these filters use a material that naturally works as a filtering agent in any water surface.

Pool filter manufacturers use this material by imitating the process that nature itself performs. Thus, these filters have a tank filled with sand with a grain size ranging from 0.8 to 1.2 mm.

There are also different filtering agents for this type of filter; silica sand, active filtering glass.

With a sand filter, dirty water will be absorbed by the skimmers, drains, or vacuum intake and introduced into the upper part of the filter's sand tank.

Inside this tank, a bed of sand will act as a natural filtering agent retaining all the dirt. At the bottom of this filter, there are collectors that will absorb the completely clean water and return it to the pool.

Also, the useful life of the filter sand will depend greatly on the dirtiness of each pool. However, it is usually necessary to change it every 2 or 3 swimming seasons.

Cartridge filters are filtration units that use cartridge filters. They are the most economical option on the market, ideal for inflatable and tubular pools with a small volume of water. This is because these filters have a lower filtering capacity.

The filter cartridges are made from different materials. They can be polypropylene, Teflon, cellulose, nylon... It is interesting to consider each material to find the most suitable for the pool's characteristics.

Regarding operation, cartridge filters are very similar to sand filters. The only difference is the filtering medium.

The water will flow into the tank when absorbed by the skimmers, drains, or vacuum intake and introduced into the filter tank. Once inside, the cartridge is responsible for removing the impurities we want to filter from the water.

The impurities will be trapped in the filter, while the water returns to the pool completely clean.

Another option when buying a pool filter is to opt for filters with diatomaceous earth.

It should be said that among those mentioned, this last one is capable of capturing the smallest particles. In fact, they can remove particles as small as 3 microns.

The water will be absorbed by the skimmers, drains, or vacuum intake until it reaches the filtration tank. Once there, it will pass through a kind of grinding stones.

These elements are coated with diatomaceous earth. It is an extremely fine powder made from fossilized plankton.

We can say that, to date, these types of filters are the most efficient. However, they are also the most expensive and require specific maintenance.

Finally, we find complete filtration units or monoblock filtration systems. These filters also allow purifying the pool water and keeping it clean easily. Their name indicates that the particularity of this filter is that it is a block system that includes a pump in the same unit.

It is a very economical and easy-to-install option, which is why they are increasingly common in above-ground pools.

If we are thinking about investing in a pool filter, this comparison between pool filters can be very useful. For example, we can note that regarding filtration quality, diatomaceous earth filters have the highest efficiency. They are closely followed by sand or glass filters, with cartridge filters being the least efficient.

It can also be important to consider the size or space each of these filters occupies. In this case, the cartridge filter would be the smallest, followed by the diatomaceous earth filter. Finally, there are the pool filters with sand or glass filters.

The choice can also be made by considering the filter maintenance. Sand filters require the least maintenance, followed by cartridge filters, and finally diatomaceous earth filters, which require more continuous maintenance.

When investing in a filter, we must also consider water consumption. In this regard, the most economical filter is the cartridge filter, followed by diatomaceous earth, and finally sand or glass.