What is the saucer looking thing at the bottom of your skimmer?

The saucer-like object at the bottom of a skimmer is typically a collection cup or a skimmer body designed to capture and concentrate organic waste, proteins, and other impurities from the water. It works by using a combination of air and water to create bubbles that attract these substances, which then rise to the surface and are collected in the cup. Regular maintenance and cleaning of this component are crucial for optimal skimmer performance.