Fluval Edge Pre-Filter Sponge The Fluval Edge Pre-Filter Sponge is a replacement intake sponge for Fluval Edge aquarium kits, helping collect fine debris while reducing the chance of small or baby aquarium inhabitants being drawn into the filter intake. Pre-Filter Sponge for Fluval Edge Aquariums Collects fine debris before it enters the filter. Helps keep aquarium water cleaner and clearer. Provides added intake protection for small or baby inhabitants. Compatible with Fluval Edge 23 L and 46 L aquarium kits. Simple replacement part for routine filter maintenance. Edge Pre-Filter Sponge Details Item number: A1387 UPC: 015561113878 Media type: pre-filter intake sponge Compatibility: Fluval Edge 23 L and 46 L aquarium kits Recommended replacement interval: up to 6 months depending on aquarium conditions Replacing the Edge Pre-Filter Sponge Remove the old sponge from the filter intake and install the replacement in the same position. Rinse during maintenance to keep water moving freely through the intake. What’s Included 1 Pre-Filter Sponge