High-quality filter floss for efficient water purification Our filter floss with a medium-coarse structure offers optimum water permeability and a long service life. Made from high-quality nylon fiber, it enables effective filtration of pond water by both mechanical and biological means. Mechanical filtration removes organic and inorganic dirt particles, while biological filtration enables better decomposition of organic components with the help of microorganisms. With VT filter floss you achieve an outstanding filter result. Tip: The wadding can be rinsed out several times, but its performance decreases after one season. For optimum results, we recommend replacing it in the spring. Order now and ensure reliable water purification for your pond!