LTWHOME Design Aquarium Mechanical Sponges Compatible with Ferplast Blumec 03 Sponges Fit for Bluwave Internal Filter (Pack of 6 Sets) Pack include: 12 x White

Pack include: 12 x White Pre-Filter Foam

Custom designed and manufactured for Fluval U1 aquarium filters

Packing include: 6 pcs coarse foam filter

Custom designed and manufactured for Aqueon QuietFlow Carbon Cartridge 20/75

Change every 3-4 weeks

LTWHOME Design Aquarium Mechanical Sponges Compatible with Ferplast Blumec 03 Sponges Fit for Bluwave Internal Filter (Pack of 6 Sets) Pack include: 12 x WhitePack include: Coarse Foam x 6, Fine Foam x 6. Custom designed and manufactured for Bluwave Internal Filter Blumec 03. 2 different porosity sponges catch large and small particles for a perfect water filtration. Good for fresh and marine water. Rinse before using.