Aquarium Filter Sponges Air Replacement Media Clear Box for Biological and Mechanical Aquariums Sponge Filters F1FB new and high quality OOTDTY Features: With Biochemical sponge in the filter box,helps to improve water quality. Increase the solubility,Make the water of fish for tank become for fresh and clear Easy to clean and more convenient to use,It can absorb oil effectively and other pollutants to maintain water quality. A effective tool to keep your aquarium healthy and cleaning. Specifications: Material:Sponge,Plastic Size: Sponge Diameter 7.0cm(2.75in) Sponge Height 7.5cm(2.95in) Box Diameter 7.5cm(2.95in) Box Height 9.1cm(3.58in) Spec:1. Yellow Sponge 2.Bottle with cover 3.Bottle with cover +Sponge Coloras pictures show Quantity: 1 Pc Note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1Pc x Sponge Or 1pc Bottle Or Bottle with sponge (No retail package) _x000D_ _x000D_ _x000D_