Aquatek Swimming Pool Filters
A Sand Pool Filter offers an excellent choice to keep the water in your swimming pool clean. The filter area of a sand filter is equal to the area of the filter itself. It is important to match the size of the pool filter with your pool. In addition, you must also match the maximum flow rate of your pool filter to your pool pump.
How A Sand Pool Filter Works
Water is pushed through a bed of filter sand and removed through a set of lateral tubes at the bottom of the pool filter. Only the top few centimetres of sand is actually used to filter the water. The principle behind the pool filter is that water is pushed through the filter sand - dirty water goes in the top and clean water exits out the bottom.
As the filter sand becomes plugged with debris from the pool, the pressure increases on the pool filter and the water flow drops. In order to clean the sand filter, you just run it in reverse and dump the waste water; this is known as “backwashing” the filter. Once the pool filter is backwashed, you move to the rinse mode to repack the sand and finally switch back to filter mode. The frequency of backwashing your pool filter varies however a good rule of thumb is to perform a backwash each month, or when you start to notice the pool filter pressure guage rise. Should the filter sand ever become really dirty, it is easily and inexpensively replaced.