Biochemical Cotton for Pond and Aquarium Large Aquarium Foam Block Filter Sponge PadsOOTDTY Introduction:Hi, my friend, do you get annoyed when you clean the bottom of the aquarium? Or upset when the downpipe is blocked? Don't worry anymore, here's the "savior" for your aquarium! This ideal choice will help you reduce many of the hassles associated with cleaning your fish tank, such as filtering pet feces and feed residues from your aquarium or aquarium. And it is suitable for any type of aquarium, you can cut any size according to your needs. Features:, recyclable, good flexibility; Nurture nitrobacteria; Maintain to purify aquarium water; Easy to install, safe for health materials, non-toxic, odorless; High porosity and open cell, airflow, effective absorption, easy cleaning; Install anywhere you want to clean it, no matter horizontal or vertical; It can be easily cleaned after washing, and the effect is not degraded; Specification:Product Name: Biochemical Cotton For Pond And Aquarium Large Filter Block Aquarium Sponge Foam PadsMaterial: FoamColor: BlackDimensions: app.100cm x 12cm x 2cm/39.37x4.72x0.79inch Quantity: 1pc Warm Prompt:1. Due to manual measurement, there will be 1-3cm error, please make sure it is ok before ordering;2. Due to different monitors and lamp light, the picture may not reflect the actual color of the item, really thank you for your understanding!3. Fish tank filter only, other accessories shown in the picture are not included. Package Includes: Fish Tank Filter Foam x 1 (Without Retail Package)