Best Filters For 20 Gallon Tank (2024 Update)
If you’re looking for the best filters for your 20-gallon tank, there are a few factors you need to consider before making a purchase. Firstly, the filtration rate should match the size of your tank. It's recommended to choose a filter that has a minimum filtration rate of 100 GPH (gallons per hour) for a 20-gallon tank. Secondly, the type of filter you choose should be appropriate for your aquarium needs. There are different types of filters available in the market, such as power filters, canister filters, and sponge filters, each having its own functionality and advantages.
Before purchasing a filter for your 20-gallon tank, you might want to ask yourself a few questions. What type of fish or aquatic plants do you currently have or wish to keep in the future? How much maintenance and cleaning are you willing to perform? Do you prefer a quiet filter or one that produces some noise? By answering these questions, you can narrow down your options and choose a filter that suits your needs best.
Furthermore, it's essential to read reviews and compare prices before selecting a filter. Make sure to check for features such as adjustable flow rate, filter media, and durability. A good filter can decrease your workload, keeping your aquarium clean and healthy, which ultimately helps in maintaining the overall aquatic environment. By following these guidelines, you can find the best filter for a 20-gallon tank that provides superior filtration, water purification, and aeration.
10 Best Filters For 20 Gallon Tank
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The product is ideal for filtering aquarium water to keep it clean and clear for aquatic life.
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The product is ideal for providing multi-stage filtration for aquariums with a flow rate of 150 gallons per hour.
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Ideal for filtering water in large aquarium fish tanks.
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This product is ideal for filtering water in small to medium-sized aquariums with a capacity of 20 to 30 gallons.
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It is an ideal filter for small aquariums with a capacity of 5 to 20 gallons.
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Filtering up to 30 gallon fish tanks for improved water quality and cleanliness.
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This product is ideal for filtering fresh and saltwater aquariums that hold 15-20 gallons of water.
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Ideal for both freshwater and saltwater setups, this power filter provides quad filtration in a mini hang-on design.
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Ideal for keeping aquarium water clean and clear in tanks up to 20 gallons.
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10
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Ideal for filtering water in 20-40 gallon tanks and reducing ammonia and nitrite buildup for healthier aquatic environments.
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1. Tetra Whisper Bio-Bag Filter Cartridges For Aquariums – Ready To Use Blue 3-Count
Introducing the Replacement Carbon Filter for aquariums, the perfect solution to ensure crystal clear and odor-free water. This high-quality filter efficiently removes discoloration and catches debris and fish waste, thanks to its dense dual-sided mesh.
Designed to fit Tetra Whisper Water Filters, this replacement cartridge is fully assembled and ready to use, making it incredibly convenient for aquarium enthusiasts. Plus, the filter is color-coded to ensure you always purchase the correct size cartridge for your filter.
To maintain optimal performance, it is recommended to change the filter cartridge monthly or sooner if needed. Assembly and replacement are a breeze, even for beginners, and all label information is provided on delivery for your convenience.
Invest in the Replacement Carbon Filter for your aquarium today and enjoy a clean, clear, and healthy environment for your aquatic pets.
2. Marineland Penguin Bio-Wheel Power Filter 150 Gph, Multi-Stage Aquarium Filtration,black
The Marineland brand is known for its reliable and technically advanced aquariums and accessories. One such accessory is the Marineland Multi-Stage Canister Filter, which uses patented Bio-Wheel technology to provide exceptional wet/dry biological filtration.
This canister filter delivers mechanical, chemical, and biological filtration to maintain a clean aquatic environment for your fish and other aquatic life. With its multi-stage filtration system, this product effectively removes debris, chemicals, and harmful toxins from the water, ensuring a healthy and thriving underwater ecosystem.
The Marineland Multi-Stage Canister Filter is compatible with Marineland Rite-Size Filter Cartridges, ensuring that you get the right size filter for your aquarium. Choose from five sizes, including 75 GPH, 100 GPH, 150 GPH, 200 GPH, and 350 GPH, to find the perfect fit for your aquarium's needs.
3. Aqueon Aquarium Fish Tank Replacement Filter Cartridges Large – 3 Pack
The Aqueon Replacement Filter Cartridges are a must-have for any aquarium enthusiast. These cartridges are designed with dual-sided dense-floss that contains over 25% more activated carbon than other leading brands. This high-quality activated carbon effectively keeps the aquarium water clean and free of impurities.
What sets Aqueon cartridges apart from others is the even distribution of activated carbon, made possible by the patented design. Installation is hassle-free, simply rinse under cold water and install using the "FRONT" orientation tab. These cartridges are available in multiple sizes, including X-Small, Small, Medium, and Large, to fit various filter types.
For optimal performance, it is recommended to change the cartridge every 4 weeks. These cartridges are versatile and can fit a range of Aqueon QuietFlow Filters, including LED PRO Size 20, 30, 50, and 75, Power Filter Size 20, 30, 50, 55/75, E Internal Size 40, and Canister Filter Size 200, 300, and 400.
Developed by true aquatic hobbyists, Aqueon provides a broad array of aquarium solutions to help maintain healthy, life-sustaining aquatic environments. From inception, Aqueon has had one goal in mind: “Doing what is best for the health and well-being of fish and aquatic life.”
Invest in Aqueon Replacement Filter Cartridges for a reliable and efficient aquarium filtration system. With their high-quality activated carbon and patented design, these cartridges are the ideal choice for maintaining a healthy aquatic ecosystem in your aquarium.
4. Whisper Ex 30: Silent Multi-Stage Filter
The Tetra Whisper EX Power Filter is a top-of-the-line product that boasts a whisper-quiet operation, making it the ideal choice for those seeking a peaceful and tranquil aquarium experience. With its advanced multi-stage filtration system, this power filter ensures that your aquarium water remains crystal clear and free of any contaminants.
Setting up the Tetra Whisper EX Power Filter couldn't be easier, as it comes ready to use straight out of the box. There's no need for any priming, so you can get started right away. This filter ensures a continuous flow of water, which helps to prevent debris buildup and maintain a healthy aquatic environment.
One of the standout features of the Tetra Whisper EX Power Filter is its no-mess filter cartridge changes. The innovative design of this filter minimizes dripping, which makes it incredibly easy to change the filter cartridges without causing any mess. This means you can keep your aquarium looking clean and tidy with minimal effort.
This filter is designed to fit 20 to 30-gallon aquariums, making it perfect for a range of setups. Whether you're a seasoned aquarium enthusiast or just starting out, this filter is sure to meet your needs and exceed your expectations.
5. Aquaclear 20 Power Filter, Fish Tank Filter For 5- To 20-Gallon Aquariums
The aquarium filtration system is a must-have for any fish enthusiast. It offers superior contact time with filter media and an energy-efficient pump, which lowers operating costs. The installation process is quick and easy, making it a hassle-free experience. To ensure maximum operation and efficiency, it is recommended to clean the aquarium filter every two weeks.
This filtration system provides optimal mechanical, chemical, and biological filtration, ensuring that the water quality is top-notch. It comes equipped with AquaClear Foam, Activated Carbon Filter, and BioMax and Cycle Guard, which work together to offer superior water quality.
The filtration volume of this aquarium filter is up to seven times larger than comparable fish tank filters, making it a powerful tool for maintaining a healthy and clean aquarium. Its efficient design ensures that the water is properly filtered, removing any harmful elements and leaving the aquarium water clean and clear.
6. Fluval C2 Power Filter, Fish Tank Filter For Aquariums Up To 30 Gal.
Introducing the 5-stage clip-on power filter, a must-have for any freshwater or saltwater aquarium enthusiast with a tank capacity between 10 and 30 gallons. This innovative filter offers a comprehensive system that ensures optimal water quality for your aquatic pets.
The filter features two mechanical stages that work together to effectively trap both large and fine debris. The foams within these stages can be easily removed for quick and effortless cleaning, saving you time and effort in the maintenance of your tank.
Furthermore, this filter features a chemical stage with activated carbon that effectively removes toxins from the water, ensuring your pets stay healthy and happy at all times.
The biological stage of this filter is equally impressive, featuring a Bio-Screen pad that blocks debris and provides a massive surface area for beneficial biological activity. This stage is integral to maintaining a healthy ecosystem within your tank.
Finally, the Biological Trickle Chamber is supercharged for fast and efficient nitrification. When loaded with Fluval C-Nodes, this stage ensures that your tank stays clean, clear, and healthy for your aquatic pets.
7. Crystalclean Ugf For 15-20 Gallon Tanks
Introducing the Clear-Free Premium Under Gravel Filter, the perfect solution for maintaining a clean and tidy aquarium with minimal effort. This air-driven filter utilizes an Air Pump (not included) to cycle crystal clear water throughout your aquarium while keeping a crisp and neat look inside. Its simplistic design means less "moving parts," making maintenance a breeze. The Clear-Free Premium Under Gravel Filter is suitable for most 15 – 20 (high) gallon aquariums.
This filter provides biological, chemical, and physical filtration. As air is pushed through the Air Stones and rises through the Lift Tubes, water is gently suctioned through gravel and the filter plates, allowing both air and water to pass through the Filt-a-Carb Activated Carbon Cartridges. When water continues to be drawn through, anaerobic bacteria collects and colonizes within the gravel and filter plates.
In addition to filtering your aquarium, the Clear-Free Premium Under Gravel Filter also aerates your tank. This air-driven system not only filters but also provides aeration, making it a filter and bubbler in one!
The Clear-Free Premium Under Gravel Filter comes with all the necessary items for installation. The package includes 2 Filter Plates, 2 Adjustable Lift Tubes, 2 Straight Airline Tubes, 3 Filter Plate Connecters, and 2 Replaceable Filt-a-Carb Activated Carbon Media Cartridges.
When it comes to measurements, each Filter Plate separately is 11.25” (W) x 11.2” (D), and the Filter Plates together measure 22.5” (W) x 11.2” (D). Each Lift Tube at the Filter Plate Base measures from 12” – 15”. With its compact size and efficient design, the Clear-Free Premium Under Gravel Filter is a must-have for any aquarium enthusiast.
Investing in the Clear-Free Premium Under Gravel Filter means investing in the health and cleanliness of your aquarium. Its air-driven system provides both filtration and aeration, making it a convenient and efficient option for maintaining crystal clear water in your tank. With its simplistic design and easy maintenance, the Clear-Free Premium Under Gravel Filter is a must-have for any aquarium owner.
8. Cascade Mini Hang-On Filter: Powerful Quad Filtration
The Cascade 20 Mini Power Hang-On Filter is the ultimate solution for maintaining crystal clear water in your aquarium. With its quiet and efficient operation, this filter can push up to 20 Gallons per Hour (GPH), making it perfect for tanks up to 7 Gallons in size, whether it's a Freshwater or Saltwater aquarium.
This filter is designed to be accommodating, thanks to its adjustable flow knob that allows you to increase or decrease the water flow as needed. This feature comes in handy during feeding times or whenever you require a different flow rate. The hang-on design is constructed for safe mounting, and the provided extension piece ensures that the lift tube measures between 5" (min) and 6 1/2" (max).
The Cascade filter is extremely beneficial to your aquarium's ecosystem. It utilizes disposable, double-sided media cartridges that contain Activated Carbon and Poly Fiber Floss. The cartridge traps floating particulate matter, removes harmful chemicals and toxins, clears up discolorations, and reduces foul odors from your aquarium's water. This filter ensures that your aquatic pets live in a clean and healthy environment.
This filter's overall measurements are 4.5" (H) x 3.75" (W) x 3" (D), making it compact and easy to install. It is manufactured by Penn-Plax, a company that specializes in creating top-quality pet products for animals, both great and small. With Penn-Plax, you can rest assured that you're getting the best for your pets, and this Cascade filter is no exception.
9. Tetra Whisper Power Filter For Aquariums, 3 Filters In 1, Up To 20-Gallons
Looking for a filter that can keep your aquarium clean and healthy? Look no further than the Tetra Whisper Power Filter!
This powerful filter uses 3-stage filtration to create crystal-clear water in aquariums up to 20 gallons. Its ultra-activated carbon removes both odor and water discoloration, while its dense, dual-sided mesh catches debris and fish waste.
But what really sets the Tetra Whisper Power Filter apart is its innovative Stay Clean technology. By reducing buildup on glass and binding small dirt particles, this filter makes it easier to keep your aquarium clean and healthy.
And when it's time to change the filter cartridge, simply replace it with a large-sized Tetra Whisper Bio-Bag Cartridge (sold separately) and enjoy months of uninterrupted filtration.
With its quiet and reliable operation, the Tetra Whisper Power Filter is the perfect choice for any aquarium owner who wants clean, clear water and a healthy environment for their fish.
10. Tetra Whisper In-Tank Filter 40i With Bioscrubber – 20-40 Gallon (25818), Black
The Tetra Whisper 40i Internal Filter is a versatile and efficient filtration system that offers both air pumping and water filtration capabilities in one package. This internal filter is designed to mount on the inside of your aquarium using the included clip, making it a space-saving solution for aquarium owners.
One of the standout features of this filter is its ability to catch debris and fish waste using its dense, dual-sided mesh filter. This ensures that your aquarium water stays clean and clear, promoting a healthy environment for your aquatic pets.
In addition to its filtration capabilities, the Tetra Whisper 40i Internal Filter also provides aeration for your aquarium water through its air-driven design. This feature helps to oxygenate the water, promoting the overall health and well-being of your fish and other aquatic creatures.
With a flow rate of up to 170 gallons per hour, this filter is powerful enough to handle most aquarium sizes. And thanks to its convenient design, changing the Bio-Bag cartridges is a breeze. Plus, since the filter mounts inside the aquarium, you can place your tank flush against the wall, freeing up valuable space in your home.
Best Filters For 20 Gallon Tank FAQs
Are sponge filters a good option for a 20 gallon tank?
Yes, sponge filters are a great option for a 20-gallon tank. They are cost-effective, easy to set up, and efficient in maintaining good water quality for the fish. Sponge filters work by pulling water through a sponge that acts as a mechanical filter, trapping debris and waste particles. At the same time, the sponge provides a surface area for beneficial bacteria to grow and convert harmful toxins into less harmful substances.
Sponge filters are also gentle on fish and suitable for smaller tanks like a 20-gallon tank. They produce minimal water flow and do not create strong currents that can stress out fish. Additionally, sponge filters are easy to clean and maintain. You can simply rinse the sponge in tank water and reuse it.
In summary, sponge filters are a great option for a 20-gallon tank. They are affordable, efficient, and gentle on fish. They provide good mechanical and biological filtration, ensuring a healthy and clean environment for your aquatic pets.
Can a hang-on-back filter be used for a 20 gallon tank?
Yes, a hang-on-back (HOB) filter can be used for a 20 gallon tank. HOB filters are one of the most popular types of filters in the aquarium hobby and are suitable for a wide range of tank sizes. When selecting a HOB filter for a 20 gallon tank, it is important to make sure that the filter is appropriately sized for the tank. Most HOB filters are rated based on the gallons per hour (GPH) of water that they can filter. As a general rule, the filter should be able to turn over the entire volume of the tank at least 5 times per hour. Therefore, for a 20 gallon tank, a filter with a GPH rating of at least 100 would be appropriate. It is also important to regularly clean and maintain the HOB filter to ensure that it is functioning properly and providing adequate filtration for the tank.
Can a power filter be used for a 20 gallon tank?
Yes, a power filter can be used for a 20 gallon tank. In fact, it is highly recommended to use a power filter for aquariums to maintain the water quality and keep the tank environment healthy for the fish and other aquatic creatures. When selecting a power filter for a 20 gallon tank, it is important to consider the size and flow rate of the filter. A filter with a flow rate of at least 100 gallons per hour is recommended for a 20 gallon tank. It is also important to choose a filter that is easy to maintain and clean. Regular cleaning and maintenance of the filter will ensure its efficiency in keeping the tank water clean and healthy for your fish.
How many filters should I use for a 20 gallon tank?
The number of filters required for a 20-gallon tank will depend on several factors such as the type of fish, the number of fish, and the level of filtration required. Generally, it is recommended to have a filter with a flow rate of four times the tank volume, which means a 20-gallon tank will require a filter with a flow rate of at least 80 gallons per hour (GPH). However, it's always better to have an additional filter or a filter that has a higher flow rate than the recommended rate for the tank to ensure proper filtration.
If you have a heavily stocked tank or large fish, you may need to consider using two filters or a larger filter with a higher flow rate. On the other hand, if you have a lightly stocked tank with small fish, a single filter with the recommended flow rate may be sufficient. It's important to note that the quality of the filter and the type of filter media used can also affect its effectiveness. Therefore, it's essential to choose a filter that is appropriate for the tank size and the inhabitants and to maintain it regularly to ensure it functions optimally.
How often should I clean the filter for a 20 gallon tank?
To maintain a healthy and clean environment for your fish, it is important to clean the filter of your 20 gallon tank on a regular basis. The frequency of cleaning your filter depends on various factors such as the type of filter, the number and size of fish in your tank, and the amount of food and waste produced by them.
As a general rule of thumb, it is recommended to clean the filter at least once a month. However, if you have a larger number of fish in your tank or if they produce a lot of waste, you may need to clean the filter more frequently.
It is important to note that cleaning the filter completely can disrupt the biological balance of your tank. Therefore, it is recommended to clean only a part of the filter at a time, allowing the beneficial bacteria to remain and continue the nitrogen cycle.
Regular maintenance of your 20 gallon tank and filter will help keep your fish healthy and happy.
Is a canister filter a good option for a 20 gallon tank?
Yes, a canister filter can be a good option for a 20 gallon tank. Canister filters are powerful and efficient filters that offer a lot of benefits to aquarium owners. They are designed to handle a large volume of water, making them ideal for larger aquariums. However, they can also be used in smaller aquariums like a 20 gallon tank.
One of the advantages of using a canister filter is that it provides excellent mechanical, chemical, and biological filtration. This means that it can remove debris, harmful chemicals, and toxins from your aquarium water while also providing a healthy environment for your fish and other aquatic livestock.
Another benefit of using a canister filter is that it is easy to maintain. Once installed, you can easily clean the filter media, replace the filter cartridges, and perform other maintenance tasks without having to remove the entire filter from your aquarium.
Overall, a canister filter is a great option for a 20 gallon tank and can help keep your aquarium clean and healthy for your aquatic pets.
What are the best filters for a 20 gallon tank?
The best filter for a 20-gallon tank depends on the type of fish and plants you have in your aquarium. However, there are a few filters that are generally suitable for most tanks.
One good option is a hang-on-back (HOB) filter. HOB filters are easy to install and maintain, and they provide good water circulation and filtration. Some popular brands include AquaClear and Marineland.
Another option is a sponge filter. These filters are affordable and effective for smaller tanks. They are also gentle on the fish and provide a good source of biological filtration. Some good sponge filter brands include Fluval and Aquatop.
Lastly, canister filters are also a good option for larger tanks. They provide excellent filtration and can handle a larger volume of water. However, they can be more expensive and require more maintenance.
Ultimately, the best filter for your 20-gallon tank will depend on your specific needs and preferences. It's important to choose a filter that is appropriate for the size and type of fish you have, and to regularly maintain and clean the filter to ensure it is functioning properly.
What is the best filter media for a 20 gallon tank?
Choosing the best filter media for a 20-gallon tank depends on several factors such as the type of fish you have, the level of filtration required, and personal preferences. Generally, the most common types of filter media are mechanical, biological, and chemical.
Mechanical filter media work by physically trapping debris and waste particles from the water. This type of media includes sponge filters, filter floss, and pads. Biological filter media are designed to cultivate beneficial bacteria that break down harmful toxins in the water. These include ceramic rings, bio-balls, and porous stones.
Chemical filter media are used to remove impurities from the water. They include activated carbon, zeolite, and phosphate removers. For a 20-gallon tank, a combination of mechanical and biological filter media is recommended. A sponge filter with ceramic rings or bio-balls can provide both mechanical and biological filtration. Adding activated carbon or zeolite can also help to keep the water clean and clear. However, it is important to note that the best filter media for your tank will ultimately depend on your specific needs and the type of fish you have.
What is the recommended flow rate for a filter in a 20 gallon tank?
The recommended flow rate for a filter in a 20 gallon tank would depend on the type and specific filter being used. As a general guideline, the flow rate should be 4-5 times the volume of the tank per hour. For a 20 gallon tank, this would mean a flow rate of 80-100 gallons per hour. However, it is important to consider the needs of the specific fish and aquatic plants in the tank as well. Some species may require a slower flow rate, while others may benefit from a higher flow rate. It is also important to ensure that the filter is properly sized for the tank and that it is providing adequate filtration for the bioload of the tank. Ultimately, it is best to consult with a knowledgeable aquarium professional or do thorough research on the specific filter and tank setup to determine the appropriate flow rate.
What type of filter is ideal for a 20 gallon tank?
Choosing the right type of filter for your 20-gallon tank is essential for the health and well-being of your aquarium inhabitants. The ideal filter for a 20-gallon tank would depend on several factors like the type of fish, the number of fish, and the overall bioload of your aquarium.
A hang-on-back (HOB) filter is an ideal choice for a 20-gallon tank. It is easy to install, maintain, and provides excellent mechanical, chemical, and biological filtration. HOB filters hang on the back of the aquarium and are available in different sizes and flow rates that can accommodate the needs of a 20-gallon tank.
Another option is a sponge filter, which is an affordable and low-maintenance choice. Sponge filters are great for small or juvenile fish and shrimp and provide gentle filtration that won't harm your aquarium inhabitants.
Canister filters are also an option, but they tend to be expensive and may be overkill for a 20-gallon tank.
Ultimately, the best filter for your 20-gallon tank would depend on the specific needs of your aquarium and the type of fish you have. It's best to research and consult with a professional to determine the right filter for your tank.
