White BioStyle 20 Hang-On Filter, 100 GPH, 4.5 W / 6 IN

Penn Plax 100 Power Hang-On Aquarium Filter Acrylic (shatterproof w/ great clarity), Crystal in Black/Blue | Wayfair CPF2

The cascade 100 quietly delivers crystal clear water and pushes water at 100 gallons per hour (GPH) for tanks up to 20 gallons in size. It’s great for freshwater and saltwater aquariums. Accommodating: the adjustable flow knob allows for increased or... ... more

Tucker Murphy Pet™ Chene Cascade 300 Power Hang-On Aquarium Filter, Crystal in Black/Blue | 8.25 H x 11.25 W x 6.25 D in | Wayfair

The Cascade 300 quietly delivers crystal clear water, and pushes water at 300 Gallons per Hour (GPH) for tanks up to 100 Gallons in size. It’s great for Freshwater and Saltwater aquariums. Accommodating: The adjustable flow knob allows for increased or... ... more

Penn Plax 20 Power Hang-On Aquarium Filter, Crystal in Black/Blue | 4.5 H x 3.75 W x 3 D in | Wayfair CPF6

The Cascade 20 quietly delivers crystal clear water and pushes water at 20 Gallons per Hour (GPH) for tanks up to 7 Gallons in size. It’s great for Freshwater and Saltwater Aquariums. Accommodating: The adjustable flow knob allows for increased or... ... more

White BioStyle 50 Hang-On Filter, 250 GPH, 5.5 W / 11 IN

OASE BioStyle 50 is a sleek, compact power filter, ideal for marine and freshwater aquariums up to 50 gallons. This hang on back filter includes three multi-stage filter cartridges and three biological filter foams to ensure optimal water quality and... ... more

White BioStyle Thermo 30 Hang-On Filter, 152 GPH, 15 W / 8.5 IN

OASE BioStyle Thermo 30 is a sleek, compact power filter, ideal for marine and freshwater aquariums up to 30 gallons. This hang on back filter includes two multi-stage filter cartridges and two biological filter foams to ensure optimal water quality... ... more

White BioStyle 30 Hang-On Filter, 150 GPH, 15 W / 8.5 IN

OASE BioStyle 30 is a sleek, compact power filter, ideal for marine and freshwater aquariums up to 30 gallons. This hang on back filter includes two multi-stage filter cartridges and two biological filter foams to ensure optimal water quality and... ... more

Navy BioStyle 30 Hang-On Filter, 150 GPH, 15 W / 8.5 IN

OASE BioStyle 30 is a sleek, compact power filter, ideal for marine and freshwater aquariums up to 30 gallons. This hang on back filter includes two multi-stage filter cartridges and two biological filter foams to ensure optimal water quality and... ... more

Penn Plax 150 Power Hang-On Aquarium Filter, Crystal in Black/Blue | 6.75 H x 7.25 W x 4.75 D in | Wayfair CPF3

The 150 quietly delivers crystal clear water, and pushes water at 150 Gallons per Hour (GPH) for tanks up to 35 Gallons in size. It’s great for Freshwater and Saltwater aquariums. Accommodating: The adjustable flow knob allows for increased or... ... more

Penn Plax Cascade 200 Power Hang-On Aquarium Filter, Crystal in Black/Blue | 6.75 H x 7.25 W x 4.75 D in | Wayfair CPF4

The Cascade 200 quietly delivers crystal clear water, and pushes water at 185 Gallons per Hour (GPH) for tanks up to 55 Gallons in size. It’s great for Freshwater and Saltwater Aquariums. Accommodating: The adjustable flow knob allows for increased or... ... more