• Increases Filter Capacity
• Reusable, Extends the life of other media
• Coarse Foam to extend time between cleaning

The mini pre filter sponge is designed for nano tank hang on back filters. Adding a pre filter sponge adds to your filtration capacity and extends the life of media in your filter. By filtering out food, small fish, snails, and debris filter media like Purigen and fine filter pads last longer. Our pre filter sponges use coarse foam which extends the time between cleaning and prevents strain on the filter motor.