Fiber Clear A Pure Cellulose Filter Powder For Crystal Clear Pool Water 7LB P/N: FCC-007 At Fiber Clear Filtration our mission is to produce safe and effective products which are in harmony with our environment and which will make swimming more enjoyable. We provide the highest quality products that will ensure that you will swim in clean, sparkling clear water. Fiber Clear filters finer than traditional D.E. media, down to 2 microns. It is also used as a filter-aid for cartridge and sand filters. The ultra-fine filtration imparts a truly polished look to pool and spa water. In addition, it is bio-degradable, non-toxic and environmentally friendly and, in use, it generally costs less than D.E.