Peter's Filter Foam is specially designed to effectively capture large particles and debris in the first stage of the filtration process. This versatile foam can be easily cut-to-fit for a custom size, preventing debris bypass and ensuring long-lasting filtration. Its pore size allows for efficient water flow while minimizing clogging, making it a valuable addition to any filtration system. Additionally, this foam aids in promoting biological filtration for a cleaner and healthier aquatic environment.