Filpowis Aquarium Filter Cartridges, 24-Pack for EZ-Change #3, Pre-Assembled

Filpowis aquarium filter cartridges are a 24-pack of ready-to-use replacements for EZ-Change #3 and compatible power filters, designed to help remove debris, control odor, and keep aquarium water clear.

• 24 cartridges — keep replacements on hand for routine filter changes.
• Compatible with EZ-Change #3, Marineland Penguin PRO 275/375, and Original Penguin 200/350 power filters — choose them for the listed filter types.
• Dense filter pad and grid design — supports debris removal, odor control, and water clarity.
• Pre-assembled cartridges — install without tools.
• Recommended replacement every 2–4 weeks — provides a straightforward routine for cartridge changes.

These replacement cartridges are made for aquarium owners who want a simple way to maintain filtration using compatible power filters. The pad-and-grid construction is designed to capture debris and help manage odor, supporting clear water and a fresh, comfortable environment for fish. The cartridges are supplied assembled, so preparation is limited to rinsing away any loose carbon before installation.

Which filters do these cartridges fit?

Filpowis cartridges fit EZ-Change #3 systems, including 20-40 and 30-60 power filters, as well as the specified Marineland Penguin models. Compatibility includes Marineland Penguin PRO Power Filters 275 and 375, plus Original Penguin Power Filters 200 and 350; the cartridge size is Rite-Size C.

• EZ-Change #3
• Marineland Penguin PRO 275 and 375
• Original Penguin 200 and 350

What does the filter cartridge do?

The dense pad and grid are designed to maximize debris removal, odor control, and water clarity. By supporting these filtration tasks, the cartridge helps maintain a fresh aquarium environment and can reduce the time spent manually cleaning the tank. It is a replacement filter component for the compatible power filters, not a complete filter system.

• Dense filter pad
• Grid design
• Designed for debris and odor management

How do I prepare and replace a cartridge?

Rinse off any loose carbon before use, then install the pre-assembled cartridge in a compatible filter; no tools are needed. Filpowis recommends replacing cartridges every 2–4 weeks for best results. This gives aquarium owners a clear interval to use when planning routine filter maintenance.

• Rinse before use to remove loose carbon
• Install without tools
• Follow the recommended 2–4 week replacement interval

Filpowis aquarium filter cartridges suit fish keepers using the compatible EZ-Change #3 or listed Marineland Penguin power filters who want pre-assembled replacements for regular maintenance. Their pad-and-grid design, tool-free installation, and 24-cartridge quantity make them a practical fit for maintaining filtration on those systems.