OnCore filter media features a modern polyester spun-bonded process, forming a web that creates a strong welds. In pool and spa applications, these welds promote filter cake formation, enhancing filtration efficiency over time. As water passes over the surface, it channels around the welds, improving the process. When the filter becomes loaded (seen as decreased flow in spas or increased tank pressure), it can be removed and cleaned. The consistent weld pattern facilitates debris release, preventing full clogging of the media and simplifying cleaning.