MarineLand Magnum Polishing Internal Canister Filter – Up to 97 Gallons, 290 GPH

Experience crystal-clear water and a healthier aquarium with the MarineLand Magnum Polishing Internal Canister Filter. Designed for tanks up to 97 gallons, this compact filtration system blends power with flexibility, so you can tailor the setup to your unique display. A self-priming, submerged motor helps you start quickly, while dual media chambers welcome carbon or customizable media to match your routine care.

How it works

The Magnum Polishing filter offers reliable, three-stage filtration in a single unit. Its two refillable chambers let you choose filtration media that suits your tank inhabitants, whether you’re aiming for stricter particulate control, better odor management, or enhanced biological filtration. A high-efficiency micron cartridge is included for water polishing, delivering clearer water and reducing visible particulates as part of your ongoing maintenance plan. The system is capable of moving up to 290 gallons of water per hour, providing strong turnover without overwhelming smaller displays.

What you get and maintenance tips

• Internal canister with a submerged motor for quick startup and reliable operation.
• Two refillable media chambers that hold carbon or customizable media for tailored filtration.
• Micron water polishing cartridge included for immediate improvement in water clarity.
• Filtration capability up to 290 GPH, suitable for aquariums up to 97 gallons.
• Includes Marineland Black Diamond Premium Activated Carbon and a Rite-Size JH floss sleeve.

• Replace the filter media every 2–4 weeks for best results; media availability varies by product type.
• Clean the micron cartridge monthly to maintain polishing efficiency and flow rate.
• Compact design helps minimize footprint behind or beside the tank, making setup neater.
• Can be used across freshwater or saltwater setups, with flexibility for different media configurations.

Real-world use and considerations

Whether you’re building a display tank, a showroom setup, or a home aquarium, the Magnum Polishing Internal Canister Filter offers a balance of power and simplicity. Real results depend on factors like tank size, maintenance habits, and fish or corals; this unit provides options to adapt filtration to your routine. The combination of a self-priming motor, refillable media chambers, and included polishing media makes it a practical choice for hobbyists seeking clearer water and easier upkeep without committing to a larger system.