Extend the life and efficiency of your Sicce Whale 350 and 500 Canister Filters with the Replacement Sponge Kit. The Replacement Sponge Kit, featuring 3 sponges (1x10ppi & 2x20ppi), enhances filtration performance for a cleaner and healthier aquarium. Sicce canister filters provide outstanding value, maintaining quality and features in a compact design with high performance and convenient running costs. With a quick disconnect system facilitating filter removal during maintenance, along with media baskets and heavy-duty locking clips, these canister filters ensure durability and functionality.