Best 5 Gallon Tank Aquarium Filters of 2025

The Tetra Whisper Internal Power Filter is an all-in-one air pump and water filter system that mounts on the inside of your aquarium. It features a dense dual-sided mesh filter that catches debris and fish waste, and an air-driven design that filters up to 80 GPH while oxygenating water. The filter also uses medium easy to change Bio-Bag cartridges, making it possible to place the tank flush against the wall.

The NICREW Aquarium Internal Filter is a powerful and customizable submersible power filter with multiple functions. It provides effective and thorough biological and chemical filtration, creating superior aquarium water environment. It is equipped with adjustable air regulator that distributes a gentle flow of water, making it safe for delicate fish or shrimp. It is suitable for both freshwater and saltwater tanks, and quickly assembles and disassembles. Customers have praised its powerful flow, customizable filter media, and quiet noise level.

The NICREW Slim Filter is designed for aquarists with small tanks up to 5 gallons. Its compact design means it won't take up much space, allowing your aquatic life to shine. You will appreciate its quiet operation, which minimizes disturbances, making it ideal for sensitive species like shrimp and bettas. The adjustable flow feature lets you customize water movement, ensuring a comfortable environment for your fish. Additionally, the patent-pending priming system automatically restarts after a power outage, providing hassle-free maintenance and peace of mind.

The Wonderfactory G1 Filter is a compact powerhouse designed for small fish tanks. Its triple filtration system—biochemical, mechanical, and surface oil removal—ensures your aquarium stays clean and clear, providing a healthy environment for your fish. With a whisper-quiet motor, you can enjoy your aquatic setup without disruptive noise. The adjustable water flow allows you to customize the filtration to suit your tank’s needs while promoting oxygen exchange for your aquatic life. Plus, the unique back-hanging design enhances safety by keeping the motor outside the tank, protecting your fish from potential harm.

The hygger Aquarium Filter offers a versatile 4-in-1 solution for your fish tank needs. With a flow rate of 80GPH, it provides effective filtration, increases oxygen levels, creates waves, and ensures proper water circulation. You can easily adjust both the water flow and oxygen volume, allowing you to create a comfortable environment for your fish. Plus, its ultra-quiet operation means you can enjoy the tranquility of your aquarium without disruptive noise. This filter is ideal for both freshwater and saltwater tanks, making it a great choice for maintaining water quality.

The AquaClear 20 Power Filter is an energy efficient aquarium filtration system that provides superior contact time with filter media, resulting in optimal mechanical, chemical, and biological filtration. Its quick and easy installation process makes it convenient for users to maintain, and it comes equipped with AquaClear Foam, Activated Carbon Filter, BioMax, and Cycle Guard to ensure superior water quality. With a filtration volume up to 7 times larger than comparable fish tank filters, this product is perfect for aquariums ranging from 5 to 20 gallons in size.

The Pawfly Quiet HOB Filter is designed for aquariums up to 5 gallons, offering multiple benefits for your fish tank. First, its dual bio sponges provide effective mechanical and biological filtration, ensuring harmful substances are removed and keeping water clean. The oil film skimmer automatically removes unsightly oil from the water surface, promoting a healthier environment for your fish. Additionally, this filter operates quietly, making it ideal for small spaces. Finally, you can easily adjust the water flow to suit your aquarium’s needs, enhancing oxygen levels and creating a lively habitat for your aquatic friends.

The Pawfly Sponge Filter is designed for small fish tanks up to 5 gallons, making it perfect for your ornamental fish or shrimp. It effectively traps debris and waste, ensuring your aquarium water stays clean and clear. With built-in mini filter balls, it blocks larger particles and supports beneficial bacteria, enhancing the biological filtration process. This filter promotes healthy oxygen circulation through its air stone, which creates a cascade of bubbles, keeping your fish lively and healthy. Plus, it's easy to clean, allowing you to maintain the filter without hassle.

The DOMICA Internal Aquarium Filter is a great choice for small tanks, producing clean water and providing aeration while taking up less space and using less energy. It features ceramic balls and bio sponge for both mechanical and biological filtration, as well as a pre-assembled filter cartridge. The filter can also double as an aeration system, increasing the dissolved oxygen levels in the water. It is easy to install and comes with mounting suction cups for easy placement in an aquarium.

The AQQA Sponge Filter is an air-powered aquarium filter designed to keep your tank clean and healthy. By connecting it to an air pump, you can enjoy effective filtration that removes debris while promoting beneficial bacteria growth. This filter not only cleans the water but also aerates it, ensuring your fish thrive in a well-circulated environment. Its heavy-duty base prevents it from floating, providing stability and ease of use. Suitable for a variety of tanks, this filter is a great choice for breeding fry, shrimp, and betta fish, making it a versatile addition to your aquarium setup.