Description: Our 100 Micron Polishing Filter Pads’ dense fiber network traps large to very fine particles floating in your freshwater or saltwater aquarium to produce sparkling clear water. The lower section of our pad is made by taking layers of resilient fibers through a special process to tighten and entangle the fibers into a dense network producing a thin firm layer, perfect for removing fine debris. PAD in flowing water with the open weave side up to trap uneaten food, waste, decaying plants, detritus, and other large and fine floating particulates from the water. Changing filter media pads regularly will by removing solid organic compounds before they continue to break down and add additional nutrients. Our aquarium filter media roll is completely safe for all fish and other aquatic life. Filter First is made without dyes. Specification: Material: pet Performance: alkali resistance, waterproof, low temperature resistance, high temperature resistance, acid resistance Applicable object: water Scope of application: air conditioners, washing machines, car starting systems, water pumps, range hoods, faucets, air purifiers, sinks, fans, paint booths, aquariums Does it contain filter material: Yes Product category:Material: pet Performance: alkali resistance, waterproof, low temperature resistance, high temperature resistance, acid resistance Applicable object: water Scope of application: air conditioners, washing machines, car starting systems, water pumps, range hoods, faucets Does it contain filter material: Yes Product category: filter cotton/filter/filter Package Includes: 1x fish tank filter cotton Note: type1: 1m long x 12cm wide type2: 1m long x 20cm wide type3: 1m long x 30cm wide type4: 1m long x 8cm wide type5: 1m long x 40cm wide type6: 3m long x30cm wide