Swimming pool owners who use a sand filter for their pool water may know that it’s the most commonly used pool filter. It is affordable and easy to operate and that’s what makes is a filter of choice.
Have you ever wondered, though, why changing pool filter sand is important? Here are three reasons:
- New sand has crisp, sharp edges and captures bacteria better. Old sand will have been worn down and will have rounded edges that won’t capture debris as well.
- Sand can be lost during backwashing and it’s important to keep the filter as full as the manufacturer recommends.
- Dirt, algae and residue will build up and be pushed into the sand bed and that could lead to that debris being filtered back into the water – especially with older sand.
When should the filter sand be changed?
As a general rule, a small sand filter (between 16-21 inches) will need to be updated with new sand every two to five years; a larger filter (24-36 inches in diameter) will be able to go between five and seven years before the sand needs to be changed.
However, if you or we notice a change in the water quality when we service your pool, it may be a signal that you need to change the filter sand even more frequently.
We use the correct type of sand for use in a pool filter. It is important to use the correct type and amount of sand for your individual filter in order to not damage the filter and to keep the water clean and clear.
