
The filter is one of the most important pieces of equipment in a pool. A clean, properly functioning filter removes debris that can be seen, as well as some that cannot be seen. The vast majority of water problems are related to poor filtration and/or circulation. Before treating water quality problems with chemicals, be sure to check the operation and maintenance of the pump and filter. All the chemical products on the shelf will not help clear the water if the filter isn't able to remove dirt and debris from the pool.
Regardless of the type of filter, normal maintenance is essential and always involves two steps: