Eco Fiber is the lightweight alternative to most available filter media. Eco Fiber was developed with the aim of protecting our precious water. Therefore with Eco Fiber you never need to backwash again. Saving on average 3500lt of water per month. One bag of Eco Fiber replaces 40kg of filter sand. Therefore a 3 bag sand filter would only need 3 bags of Eco Fiber or 3kg's. Cleaning Eco Fiber is simple and can be expected to be done every 6 months. At the end of it's estimated 2 year lifespan the product can be completely recycled.