Grech Aquarium Filter Foam Replacement Pads 3-Pack for CBG-500 – Hang On Back (HOB) Fish Tank Filter Sponge Media Insert

About this item

• Effective Mechanical Filtration – High-density foam sponge traps debris, uneaten food, and fish waste to help improve water clarity and maintain a clean aquarium environment.
• Designed for Grech CBG Series Filters – Precision-cut replacement foam pads made specifically for CBG-500, CBG-800, and CBG-1200 Hang-On-Back (HOB) aquarium filters (model-specific sizing).
• Supports Beneficial Bacteria Growth – Porous sponge structure promotes biological filtration by providing surface area for beneficial bacteria essential to a healthy freshwater fish tank.
• Maintains Strong Water Flow – Balanced foam density captures particles without restricting circulation, helping your filter operate efficiently.
• Reusable & Long-Lasting – Easy to rinse and reuse during routine maintenance; replace as needed for optimal filtration performance. Includes 3 replacement foam pads per pack.