Your filter is the center of your pool system. Dirty or broken grids and cartridges are often the root of the problem when dealing with cloudy or green pools. As you can see from the pictures below, filters should be cleaned regularly to ensure proper filtration of your pool water. We recommend a filter cleaning on DE and cartridge filters about every 5-6 months. We offer filter cleaning services for all DE and cartridge filters. During the cleaning process, we will inspect the condition of your grids and cartridges to ensure they are not broken and if grids or cartridges need replacement, we sell replacements to fit your specific filter.