AQUANEAT Aquarium Filter Media Pad Dual Density Bonded Filter Floss Roll Cut to Fit for Fish Tank Canister Filter 72" x 12” x 3/4-1”Brand: AQUANEAT Features: Dual density The white sides open fiber construction traps larger particles while the green sides dense fiber network traps fine particles working together to produce crystal clear water in your aquarium. Cut to fit Can easily be cut to any size and used as a pre filter for any aquarium filter, sump, wet dry, canister, power filter etc. Improve water quality Provide mechanical filtration to keep your water clear for extended