sump filter

A sump filter is an essential component in many aquariums and ponds that helps maintain clean, healthy water. It is typically a container or chamber located below the main tank, where water from the system flows into. Inside, it contains media like sponges, pads, or traps that remove debris, waste, and harmful bacteria. The sump filter also often includes equipment such as heaters, protein skimmers, or pumps. By continuously filtering water before it returns to the main tank, the sump helps ensure optimal water quality and clarity, supporting a balanced and thriving aquatic environment.