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Best Internal Filter For Aquarium (2024 Update)

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If you're looking for an efficient and effective way to keep your aquarium clean, an internal filter is the way to go. These handy devices are designed to remove debris, waste, and harmful bacteria from your aquarium water, providing a healthier and cleaner environment for your fish and plants.

Before buying an internal filter for your aquarium, there are several factors to consider. First, the size of your aquarium is crucial as it will determine the size and power of the filter needed. A filter that is too small will not be efficient, while one that is too big can create too much current and harm your plants and fish. The type of fish you have, the type of substrate you use, and the amount of waste produced by your pets are also important factors to consider when selecting your filter.

Are you tired of constantly changing the water in your aquarium? Are you concerned about the health and wellbeing of your fish? An internal filter can provide the perfect solution. But, with so many options to choose from, where do you start? How do you know which filter is the best for your aquarium? Keep reading for some tips and insights into selecting the best internal filter for your needs.

10 Best Internal Filter For Aquarium

# Product Image Product Name Product Notes Check Price
1
This product is ideal for providing physical and biological filtration for freshwater aquariums, nano tanks, turtle tanks, and terrariums.
2
This product is ideal for filtering water in both freshwater and saltwater applications, particularly when it's submerged.
3
This product is ideal for filtering and cleaning aquarium water in corners using physical, biological, and chemical processes.
4
It is ideal for filtering and purifying water in aquariums with a capacity of up to 97 gallons.
5
It is ideal for filtering and aerating aquariums that hold 5 to 10 gallons of water.
6
The product is ideal for filtering 3 gallon aquariums with ease and minimal noise.
7
Ideal for providing complete filtration for aquariums and turtle tanks, including physical, biological, and chemical filtration.
8
This product is ideal for filtering and maintaining the water in small aquariums and turtle tanks with adjustable water flow.
9
Ideal for providing comprehensive filtration in aquariums and turtle tanks through physical, biological, and chemical means.
10
The product is ideal for filtration in both freshwater and saltwater aquariums.
This product is ideal for providing physical and biological filtration for freshwater aquariums, nano tanks, turtle tanks, and terrariums.
This product is ideal for filtering water in both freshwater and saltwater applications, particularly when it's submerged.
This product is ideal for filtering and cleaning aquarium water in corners using physical, biological, and chemical processes.
It is ideal for filtering and purifying water in aquariums with a capacity of up to 97 gallons.
It is ideal for filtering and aerating aquariums that hold 5 to 10 gallons of water.
The product is ideal for filtering 3 gallon aquariums with ease and minimal noise.
Ideal for providing complete filtration for aquariums and turtle tanks, including physical, biological, and chemical filtration.
This product is ideal for filtering and maintaining the water in small aquariums and turtle tanks with adjustable water flow.
Ideal for providing comprehensive filtration in aquariums and turtle tanks through physical, biological, and chemical means.
The product is ideal for filtration in both freshwater and saltwater aquariums.

1. Aquarium Filter For Clear Water, Penn-Plax Cascade 170

Looking for a quiet and efficient submersible filter for your aquarium? Look no further than the Cascade 170! This filter is designed to deliver crystal clear water throughout your tank without any noise or disruption. It cycles water at a rate of 45 gallons per hour, making it perfect for tanks up to 10 gallons in size.

One of the standout features of the Cascade 170 is its adjustable flow switch. This allows you to increase or decrease the water flow as needed, making it incredibly helpful during feeding times or other situations where you need to customize the water flow. Additionally, the directional flow nozzle allows for even more customization and convenience.

The Cascade 170 is also fully submersible, and comes with a small, internal Bio-Sponge that optimizes colonization of anaerobic bacteria. This provides mechanical filtration that traps large particulate matter, ensuring that your tank stays clean and healthy.

While accessing the Bio-Sponge can be a bit tricky, the Cascade 170 is still highly customizable. The internal media chamber can be customized with other filter media to meet the specific needs of your tank.

Another great feature of the Cascade 170 is the Venturi Aeration. This provides your tank with filtered, oxygenated water, eliminating the need for an air pump. This filter combines both functions, making it incredibly convenient and easy to use.

The Cascade 170 measures 3.25 inches in length, 1.5 inches in width, and 1.5 inches in depth, making it compact enough to fit in small spaces while still being customizable.

2. Sicce Shark Adv 800 Internal Filter, Freshwater And Saltwater Application, For Submerged Use|211 Gph

The Shark ADV Internal Filter is a top-of-the-line product that boasts a unique design and advanced features that make it stand out from other filters available on the market. The filter is equipped with a patented magnetic quick uncoupling system (MCS System), allowing for easy maintenance and cleaning. The modular design of the filter also allows for an extra filtering compartment to be added, providing even more filtration capacity.

One of the standout features of the Shark ADV is its fish-friendly design. The filter contains an adjustable intake diameter, which ensures that small fish are protected and not sucked into the filter. The transparent mechanical filter body also makes it easy to monitor the clogging level and perform maintenance when needed.

The Shark ADV comes with a Venturi system that enhances oxygenation, ensuring a healthy and thriving aquatic environment. The unique magnet connecting system allows for easy maintenance and cleaning, making the filter a breeze to use.

With a filtering volume of 320 cm3, the Shark ADV is well-equipped to handle the needs of most aquariums. Additionally, the filter is designed to last for multiple years of successful performance with regular maintenance and care.

SICCE, the company behind the Shark ADV, has been a leader in the aquarium and gardening market for over 40 years. Their products are recognized worldwide for their versatility and high-quality, making the Shark ADV a reliable choice for any aquarium enthusiast.

3. Cornerclear Internal Fish Tank Filter – 160 Gph

The Cascade 610 Submersible Filter is the perfect addition to any aquarium of up to 50 gallons in size. It boasts a unique design that allows it to fit seamlessly into unused corner space, while still delivering crystal clear water quietly and efficiently.

With a water cycling rate of 160 gallons per hour (GPH), this filter is both quiet and powerful. It utilizes two filter media chambers, which come equipped with a bag of Activated Carbon and a Bio-Sponge. These chambers are effective in optimizing the colonization of anaerobic bacteria, trapping floating particulate matter, removing harmful chemicals and toxins, clearing up discolorations, and reducing foul odors from your aquarium’s water.

The Cascade 610 is fully submersible, and comes equipped with an adjustable flow knob that allows for increased or decreased water flow at will. This feature is particularly helpful during feeding times or as needed. Additionally, the filter features a directional flow nozzle that allows for the direction of water flow within your aquarium to be easily moved. The unit is also designed with 6 suction cups that mount inside one of your tank’s corners, making it easy to accommodate.

The Cascade 610 also includes an optional spray bar assembly, which is a great feature to have. The spray bar assembly allows you to either distribute water over the surface or to keep things submerged within your aquarium by using the elbow joint. This is an added bonus to the adjustable flow knob and directional flow nozzle, making this filter a versatile and accommodating addition to any aquarium.

In the package, you will find the Cascade 610 Filter, 2 Media Chambers, 1 Spray Bar Assembly, 1 Bag of Activated Carbon, 1 Bio-Sponge, and 1 Electric Power Cord. All of these items work together to make the Cascade 610 a comprehensive and effective filter for your aquarium.

4. Crystal Clear Canister: Marineland Filter For Aquariums

The Marineland Magnum Polishing Internal Canister Filter (Ml90770) is an exceptional filtration system designed for aquariums up to 97 gallons in size. This filter is equipped with a submerged motor that enables a quick and easy startup process, ensuring that your aquarium's water remains clean and healthy.

With its versatile filtration system, the Marineland Magnum Polishing Internal Canister Filter features two refillable chambers that can house either carbon or customizable filter media. This allows you to tailor the filtration process to meet the specific needs of your aquarium's inhabitants. Additionally, the filter is equipped with a high-efficiency micron cartridge that provides top-notch water polishing to ensure your aquarium's water is crystal clear.

The Marineland Magnum Polishing Internal Canister Filter is capable of filtering 290 gallons of water per hour, making it an ideal choice for aquariums up to 97 gallons in size. It is an extremely user-friendly filtration system that requires minimal maintenance, and it is easy to set up and operate.

The Marineland Magnum Polishing Internal Canister Filter comes with all the components you need to get started, including the micron cartridge. This ensures that you get everything you need to begin filtering your aquarium's water and maintaining a healthy environment for your aquatic pets.

5. Whisper In-Tank Filter: Clear Aquarium Bliss

The Tetra Whisper 10i Internal Filter is an outstanding all-in-one air pump and water filter system that is designed to deliver top-notch filtration functions. With its internal filter system, it mounts effortlessly on the inside of your aquarium with a clip that is included in the package.

One of the key features of this filter is its ability to catch debris and fish waste. It boasts of dense dual-sided mesh filters that effectively trap debris, ensuring that your aquarium stays clean and healthy for your aquatic friends.

Thanks to its air-driven design, the Tetra Whisper 10i Internal Filter can filter up to 80 gallons of water per hour while also oxygenating the water, ensuring that your fish stay healthy and happy.

The filter's convenient design also makes it incredibly easy to use. It uses medium easy-to-change Bio-Bag cartridges, and its filter mounts inside the aquarium, which makes it possible for you to place your tank flush against the wall.

6. Aqueon Quietflow E Internal Power Filter Extra Small – 3 Gallon

Looking for a reliable and efficient way to keep your aquarium water clean and healthy? Look no further than this high-quality filter system, designed to remove impurities and keep your fish happy and healthy.

Featuring an easy-to-install design that utilizes suction cups and hanging clips, this filter is simple to set up and use right out of the box. And thanks to its auto-start pump, you won't need to worry about priming it or dealing with complicated startup procedures – it will automatically restart if power is interrupted and restored.

With an average filter cartridge lifespan of four weeks, you can trust this system to keep your aquarium water crystal clear and free of harmful contaminants. And with a carbon cartridge included for chemical filtration, you can rest easy knowing that odors and discoloration will be effectively removed from your water.

Designed to fit aquariums up to three gallons in size, this filter system is compatible with Extra Small Aqueon Replacement Cartridges, making it a versatile and convenient choice for aquarium owners of all experience levels. So why wait? Invest in the best for your fishy friends today!

7. Ultimate Aquarium Filtration With Penn-Plax Cascade 400!

The Cascade 400 Submersible Filter is an excellent choice for aquarium enthusiasts who want to ensure that their aquatic pets have clean and healthy water. This filter is designed to operate quietly and efficiently, delivering crystal clear water to tanks up to 20 gallons in size. It works well for both freshwater and saltwater aquariums, as well as a variety of terrarium setups.

One of the standout features of the Cascade 400 is its adjustable flow switch, which allows for increased or decreased water flow as needed. This is particularly helpful during feeding times, or when additional water circulation is required. The filter also comes with directional flow nozzles, which provide additional tank customization and convenience. Additionally, the filter utilizes 4 suction cups, allowing for both vertical and horizontal mounting positions.

The Cascade 400 is fully submersible and utilizes 2 filter media chambers, which come with filter media: 1 refillable Carbon Cartridge and 1 Bio-Sponge. This filter optimizes the colonization of anaerobic bacteria, which is essential for maintaining a healthy aquatic environment. It also traps floating particulate matter, removes harmful chemicals and toxins, clears up discolorations, and reduces foul odors from your aquarium’s water.

One of the best features of the Cascade 400 is its Venturi Aeration, which provides your tank with filtered, oxygenated water. This feature eliminates the need for an air pump, which simplifies the setup process. Instead of two separate units, this filter combines both functions. Simply connect the Air Tube and Air Muffler to the Flow Nozzle, and follow the included instructions. It's important to fully submerge and fill the filter with water before turning it on.

Lastly, the Cascade 400 comes with an aerating spray bar, which evenly distributes filtered water over the surface of your aquarium. This feature is particularly helpful for ensuring that oxygen is evenly distributed throughout the tank, which is essential for maintaining a healthy aquatic environment.

8. Aquarium Filter – Tri-Shape, Submersible & Adjustable

The aquarium enthusiasts would be pleased to know that there is a new internal filter on the market with a unique triangle shape design. This corner filter is equipped with four strong suction cups that allow it to be easily placed in the corners of the aquarium, saving valuable space and enhancing the overall aesthetics of the aquarium.

This internal filter is equipped with a three-stage filtration system that includes a replaceable filter cartridge. The dense dual-sided mesh in the cartridge catches debris and fish waste, while the Ultra-activated carbon inside the mesh removes odors and discoloration. The bio sponge provides efficient mechanical filtration, and the ceramic rings offer a large surface area for the growth of beneficial bacteria. These bacteria degrade harmful impurities and help maintain the ecological environment.

The fish tank filter is designed with three water flow features. When placed a little above water, connecting the flat nozzle outlet or spray tube can produce different waterfall features. When fully submerged in water with the air tube connected, air bubbles are created, and oxygen is aerated into the tank. The incoming air rate can be adjusted by rotating the air flow valve.

The water flow direction can be adjusted by moving the water outlet, and the flow adjusting knob can easily control the water flow from gentle to strong. Additionally, this filter for fish tank is designed to operate quietly while providing good filtration. The low noise air pump keeps the environment peaceful, and the filter is easy to maintain. The bio sponge can be cleaned every 2-4 weeks, and it is recommended to change the filter cartridge every 2-4 weeks for optimal performance.

9. Cascade 600: Complete Water Care For Aquatic Life.

The Cascade 600 Submersible Filter is a powerful and efficient tool for keeping aquariums and terrariums clean and healthy. With a water cycling rate of 175 Gallons per Hour (GPH), this filter can accommodate aquariums up to 50 gallons in size. Its quiet operation ensures that your aquatic pets won't be disturbed by any loud noises.

Thanks to the adjustable flow switch, you can easily increase or decrease water flow as needed. This feature comes in particularly handy during feeding times, when you might want to reduce the water flow to prevent food from scattering all over the tank. The directional flow nozzles also allow for customization and convenience, giving you greater control over the water flow.

The Cascade 600 is fully submersible and comes with two filter media chambers: one refillable Carbon Cartridge and one Bio-Sponge. These chambers optimize the colonization of anaerobic bacteria, trap floating particulate matter, remove harmful chemicals and toxins, clear up discolorations, and reduce foul odors from your aquarium’s water.

One of the Cascade 600's standout features is its Venturi Aeration, which provides your tank with filtered, oxygenated water. This eliminates the need for an air pump and offers a two-in-one solution for your aquarium's aeration and filtration needs. Simply connect the Air Tube and Air Muffler to the Flow Nozzle and follow the included instructions. Remember to fully submerge and fill the filter with water before turning it on.

The Cascade 600 also includes an Aerating Spray Bar that evenly distributes filtered water over the surface of your aquarium. This feature ensures that all areas of the tank are receiving the same level of filtration and aeration, promoting a healthy and balanced aquatic environment.

10. Fluval U4 Underwater Filter, Freshwater And Saltwater Aquarium Filter, A480,black

Introducing the versatile and efficient aquarium filter that can be used as a primary filter for smaller tanks or as a supplementary filter for larger aquariums. The sleek design of this filter boasts an easy grip water control panel and a redesigned media cartridge that effectively traps more debris, keeping your aquarium clean and healthy.

Maintenance and replacement of the filter cartridge is a breeze thanks to the convenient flip-top lid. With just a quick flip, you can easily access the filter cartridge for cleaning or replacement, saving you time and effort.

Positioning this filter horizontally is recommended for shallow tanks, larger tanks with low water levels, or to create a stunning waterfall feature. Alternatively, you can position it vertically against the aquarium wall to create customized flow patterns and currents.

This filter has been designed to cater to a range of aquarium environments, including freshwater, saltwater, and reptile environments, accommodating up to 65 gallons of water. You can trust this filter to provide your aquatic pets with a clean and healthy environment, promoting their health and well-being.

Invest in this aquarium filter today and enjoy its efficient performance, sleek design, and ease of use.

Best Internal Filter For Aquarium FAQs

Can I customize the media in my internal filter for my aquarium?

Yes, you can definitely customize the media in your internal filter for your aquarium. The media in a filter is responsible for removing impurities and maintaining water quality in the aquarium. Different types of filter media are available in the market, and you can choose the ones that suit your aquarium's specific needs.

For example, mechanical filter media can remove larger particles like uneaten food and debris. Biological filter media can help establish beneficial bacteria that break down harmful toxins in the water. Chemical filter media may be used to remove specific impurities like ammonia or nitrates.

You can also consider using a combination of different filter media to achieve the desired level of filtration in your aquarium. It is important to note that the media should be cleaned or replaced regularly to prevent clogging and ensure optimal performance.

Overall, customizing the media in your internal filter is a great way to provide effective filtration and maintain a healthy environment for your aquarium inhabitants.

Can I use an internal filter with a planted aquarium?

Yes, you can use an internal filter with a planted aquarium, but there are a few things to keep in mind. Firstly, you should choose a filter that is appropriate for the size of your aquarium. Secondly, you need to make sure that the filter is not too strong, as this can uproot your plants or damage them. You can achieve this by adjusting the flow rate or positioning the filter in a way that reduces its impact on the plants. Additionally, you should choose a filter that has a good mechanical and biological filtration capacity, as this will help to keep the water clean and healthy for your plants and fish. It's also a good idea to clean the filter regularly to prevent any buildup of debris or harmful substances that could affect your plants. By following these guidelines, you can successfully use an internal filter in conjunction with a planted aquarium.

How do internal filters work in aquariums?

Internal filters are a popular choice for aquarium enthusiasts because they are easy to install and maintain. These filters work by using a pump to draw water into the filter chamber, where it is then pushed through a series of filter media. The filter media can include mechanical filters, such as sponge or floss, which physically trap debris and waste particles from the water. Biological filters are also commonly used, which provide a surface area for beneficial bacteria to grow. These bacteria break down harmful ammonia and nitrite in the water into less harmful nitrate. Finally, chemical filters, such as activated carbon, can be used to remove impurities and odors from the water. The filtered water is then returned to the aquarium through an outlet. It is important to clean and replace the filter media regularly to ensure that the filter continues to function effectively.

How much does a high-quality internal filter for an aquarium cost?

The cost of a high-quality internal filter for an aquarium can vary depending on the size of the aquarium and the specific features of the filter. Generally, a small filter suitable for a 10-gallon aquarium can cost around $10 to $15, while a larger filter for a 50-gallon aquarium can cost around $50 to $80. However, there are also high-end filters with advanced features such as multiple filtration stages, adjustable flow rates, and noise-reduction technology that can cost upwards of $100 or more. It's important to note that investing in a high-quality filter is essential for maintaining the health and cleanliness of your aquarium, so it's worth considering the long-term benefits before making a purchase. Additionally, regular maintenance and replacement of filter media is also necessary to keep the filter functioning efficiently.

How often should I clean my internal filter for my aquarium?

Cleaning the internal filter for your aquarium is an essential task that you should perform regularly to maintain the health of your fish and the overall cleanliness of the tank. The frequency at which you should clean the internal filter depends on various factors such as the size of the aquarium, the number of fish, the type of filter, and the type of food that you feed your fish.

In general, it's advisable to clean the internal filter at least once a month. This will help to remove any debris or waste that has accumulated in the filter and ensure that it's functioning optimally. However, if you have a larger aquarium or a high number of fish, you may need to clean the filter more frequently, perhaps every two weeks.

You should also keep an eye on the filter and observe its performance. If you notice that the water flow has slowed down or the filter is making unusual noises, it may be time to clean it. Additionally, if you feed your fish a lot of food, you may need to clean the filter more frequently to prevent the buildup of waste.

Overall, it's crucial to maintain the cleanliness of your aquarium to keep your fish healthy and happy. By cleaning your internal filter regularly, you can ensure that your fish have a clean and healthy environment to thrive in.

Is it necessary to have an internal filter in a small aquarium?

Yes, it is necessary to have an internal filter in a small aquarium, particularly if you have fish or other aquatic creatures living inside. Internal filters help to maintain the water quality by removing debris, excess food, and waste products, which can be harmful to fish and other inhabitants if left to accumulate. In a small aquarium, the volume of water is limited, and any changes in water quality can have a significant impact on the health of the creatures living inside. An internal filter will also help to oxygenate the water and promote good water circulation, which is essential for maintaining a healthy environment. Without a filter, the water can become stagnant, leading to the growth of harmful bacteria and other pathogens. Therefore, it is recommended that you install an internal filter in your small aquarium to ensure the health and well-being of your aquatic pets.

What are the top-rated internal filters for aquariums?

There are various types of internal filters that are ideal for aquariums. However, some of the top-rated internal filters for aquariums include the Fluval U4 Underwater Filter, the Penn Plax Cascade 600 Submersible Aquarium Filter, and the Aqueon QuietFlow Internal Filter.

The Fluval U4 Underwater Filter is a powerful and reliable filter that provides excellent filtration for aquariums up to 65 gallons. It has a unique design that allows it to filter water in multiple directions, ensuring thorough and effective filtration.

The Penn Plax Cascade 600 Submersible Aquarium Filter is another top-rated internal filter that is suitable for aquariums up to 50 gallons. It comes with a range of filtration media, including a coarse sponge, fine sponge, and activated carbon, to provide efficient mechanical, biological, and chemical filtration.

The Aqueon QuietFlow Internal Filter is a reliable and effective filter that is suitable for aquariums up to 40 gallons. It features a patented design that enhances water circulation and oxygenation, ensuring a healthy and clean aquarium environment.

Ultimately, the choice of an internal filter for your aquarium will depend on the size of your aquarium, the type of fish you keep, and your personal preferences.

What features should I look for in an internal filter for my aquarium?

When selecting an internal filter for your aquarium, there are a few features that you should consider. Firstly, you should choose a filter that is appropriate for the size of your aquarium. It's recommended that the filter should be able to process the entire volume of water in the aquarium at least four times per hour.

Another important feature to consider is the type of filtration. Most internal filters utilize mechanical, biological, and chemical filtration methods. Mechanical filtration removes debris and particles from the water, biological filtration removes harmful toxins, and chemical filtration removes impurities and odors.

The ease of maintenance is also an important factor to consider. A filter that is easy to clean and maintain will save you time and effort in the long run. Additionally, you should look for a filter that operates quietly and has adjustable flow rates.

Overall, choosing an internal filter that is appropriately sized for your aquarium, utilizes effective filtration methods, is easy to maintain, and operates quietly will ensure a healthy and clean environment for your aquatic pets.

What is the difference between an internal filter and an external filter for aquariums?

Internal filters are filtration units that are placed inside the aquarium. They are typically designed for smaller aquariums and can be attached to the side or bottom of the tank. Internal filters are easy to install and maintain and can be a cost-effective option for smaller aquariums. They work by drawing water through a sponge or filter media, which removes debris and biological waste.

External filters, on the other hand, are located outside of the aquarium and typically sit below or next to the tank. They are designed for larger aquariums and can provide a higher level of filtration. External filters work by pulling water from the tank through a series of filter media, before returning the clean water back into the aquarium. These types of filters are more expensive than internal filters, but they are also more powerful and can handle larger volumes of water.

In summary, the main difference between internal and external filters is their location and the size of aquarium they are designed for. Internal filters are best suited for smaller aquariums, while external filters are designed for larger aquariums and provide a higher level of filtration.

What size internal filter do I need for my aquarium?

The size of the internal filter you need for your aquarium depends on the size of your tank and the number of fish you have. As a general rule, you should aim for a filter that can circulate the water in the tank at least four times per hour. So, for example, if you have a 20-gallon tank, you'll want a filter that can handle at least 80 gallons per hour.

Another factor to consider is the type of fish you have in your aquarium. Some fish produce more waste than others, so you may need a larger filter if you have a lot of fish or fish that produce a lot of waste.

It's always a good idea to err on the side of caution and choose a filter that is slightly larger than you think you need. This will help ensure that your tank stays clean and your fish stay healthy. If you're unsure about what size filter to choose, consult with a professional at your local pet store or aquarium supplier.

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