Best 5 Gallon Tank Aquarium Filters of 2026

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 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 Internal Filter is a powerful submersible power filter designed for fish tanks ranging from 2 to 5 gallons. It provides effective and thorough biological filtration, creating a superior water environment for your aquarium. The fine filter foam traps debris and fish waste, while also absorbing odors, ensuring a clean and fresh tank. With its ability to generate abundant air bubbles and water flow, this filter is optimal for oxygen supplement and water circulation in your aquarium. The adjustable air regulator allows for a gentle flow of water, making it safe for delicate fish or shrimp. With its easy assembly and disassembly, along with the included suction cups for secure in-tank installation, this filter is suitable for both freshwater and saltwater tanks.

The DaToo Aquarium Filter is designed to keep your fish tank clean and healthy with its multi-functional system. It combines water circulation, oxygenation, wave making, and filtration, making it ideal for tanks between 5 and 15 gallons. The filter runs quietly at just 40 decibels, so it won’t disturb you or your aquatic pets. It also features an adjustable oxygen supply, allowing you to control airflow to suit the needs of different fish and plants. Plus, its deep biofiltration system with a high-density sponge helps remove debris and supports beneficial bacteria, ensuring clear and fresh water for your fish to thrive.

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 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 Novique Slim Aquarium Filter is designed to fit perfectly in small tanks up to 5 gallons, saving you space with its slim and compact build. It operates quietly, producing less noise than a normal conversation, so you can enjoy a peaceful environment around your aquarium. You can easily adjust the water flow to suit different aquatic pets, like bettas or shrimp, ensuring they aren’t stressed by strong currents. Plus, its triple filtration system combines mechanical, chemical, and biological methods to keep your tank water clean and healthy for your fish and plants.

The minilake Small Tank Filter is designed to fit neatly in small aquariums between 1 and 5 gallons, saving space and keeping your tank looking tidy. It offers an automatic restart feature that powers the filter back on after any outages, so you don’t have to worry about manually turning it on again. The filter kit comes complete with everything you need to set it up quickly, including the filter body, tubes, sponge, and cartridges. Plus, it uses a three-stage filtration system that combines mechanical, biological, and chemical methods to keep your aquarium water clean and healthy for your fish.

The AQQA 5-10 Gal Filter is designed to keep your small aquarium clean and healthy with ease. It combines filtering, aerating, and circulating water all in one compact device, helping you maintain clear water without constant upkeep. The filter uses both a sponge and bio media to trap debris and support natural bacteria, which keeps the water balanced whether you have freshwater or saltwater fish. With two outlet options, you can choose between a spray bar for better oxygen flow or a flat outlet for extra aeration, giving you control over your tank’s water movement. Plus, you can adjust the water and air flow to suit different tank setups, making it great for planted or shrimp tanks too.