Low Cost Pond filtration With Sand Filter

Sand Filter Work, Pic From reuk.co.uk

KOI POND FILTER -- For small koi pond keepers, sand filter devices will be one of the most economical options when it comes to pond filtration. This is because the mechanical filtration is far better than most other mechanical filtration devices on the market today and the sand bed will also serve as a biological filter, eliminating the need to purchase more than one filtering device. Sand Filter has been shown to polish the pond water and make it sparkling clear.

How Sand Filter Work?

High rate sand filters are becoming increasingly more popular with koi enthusiasts as both mechanical and biological filtering devices. The fine silica sand keeps water crystal clear while allowing for a large colony of beneficial bacteria to grow on the large surface area of the sand. These are relatively low maintenance filter systems and are relatively cheap when compared to multi-chambered biological filters and other mechanical filtration systems.

Sand filters work best in smaller pond situations due to the relatively small surface area being offered for water movement. Larger ponds mean more impurities that will be strained out of the water and require that your filter be backwashed more often, even up to once per day, in order to prevent clogging. In larger ponds, this drawback can be overcome by installing another filter or two parallel to the first.


Source:
http://www.ehow.com/about_6522511_koi-pond-sand-filter-information.html