2Pcs Biochemical Blue Filter Foam Aquarium ReplacementFish Pond Sponge Pad

Description ✔ This filter pad sponge for HW series canister filter ✔ Provides both mechanical and biological filtration ✔ Promotes nitrogen cycle reduce the death rate of fish ✔ Can be used again after cleaning no clogging no deformation ✔ Excellent effect on decomposing excreta and feed residues improving water quality Notice Please allow 1 3cm error due to manual measurement and make sure you do not mind before ordering Please understand that colors may exist chromatic aberration as the different placement of pictures Specifications ColorBlueMaterialCotton303 Size7 5 L x 7 5 W x 0 75 H 304 404 Size8 5 L x 8 5 W x 0 75 H Pattern302 505A 05 303AB 403AB 04 304AB 404AB 704AB 03 402AB 505B 02 702AB 507AB 01 Package Included 2X Blue Filter Pads