The product is 5 sets of two Penn-Plax Cascade 300 Internal Filter Replacement Carbon Cartridges. These cartridges are specifically designed for the Penn-Plax Cascade 300 submersible filter, providing a convenient solution for maintaining clean and healthy water in fish tanks and aquariums. Made in China, these cartridges are essential for keeping the water in the tank filtered and clear, ensuring the well-being of the fish and other aquatic animals. Ideal for pet owners looking to enhance the filtration system of their aquarium, these replacement cartridges offer a reliable and efficient solution for maintaining water quality.
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