Filters: The Key to Time and Chemical Savings
Three basic types of filters exist for both above ground and in-ground swimming pools:
• Sand Filter
• Diatomaceous Earth
It is important to confirm the size of filter is adequate for your pool and your pool pump is rated for your filter. Generally the filter cannot be oversized, in other words the bigger the better. An undersized filter will easily double your chemical use, double your time spent on water chemistry and give you many days of murky water. Very few above ground pools are sold with an adequate filter.
Sand Filter Size Maximum U. S. Gallons
180 LBS 9,000
200 LBS 12,000
300 LBS 26,000
500 LBS 36,000
600 LBS 50,000
900 LBS 75,000
Pools with inadequate filters can either add a second filter or increase the size by replacing an existing filter. In the case of sand filters an upgrade in the media itself may permit a marginally sized filter to successfully operate the pool. Media options will result in a specific micron removal with a properly sized pump.