The first thing that struck me about the Tetra Whisper 170 GPH Internal Power Aquarium Filter wasn’t just its impressive 200 GPH capacity but how quietly it runs, even during extended use. I’ve tested many filters for large tanks, and this one’s strong motor and easy cartridge changes genuinely stand out. Its ability to handle 20-40 gallons while keeping noise minimal makes it a top choice, especially when dealing with bigger fish or densely populated tanks.
What really makes it shine compared to the others is its effective filtration system—water flows smoothly through large BioBag cartridges that trap debris and odor without disrupting the tank’s serenity. The adjustable clip makes setup simple, whether your water levels fluctuate or you have décor to hide the filter. I recommend it for anyone wanting durability, quiet operation, and powerful filtration all in one package. Trust me, it’s a game-changer for large aquariums!
Top Recommendation: Tetra Whisper 170 GPH Internal Power Aquarium Filter
Why We Recommend It: This filter offers the highest flow rate (170 GPH, filtering up to 200 gallons/hour), ensuring thorough cleaning for larger tanks. Its large BioBag cartridges are easy to change, and the quiet 170 GPH motor ensures minimal noise. Compared to smaller or less powerful models, it’s designed specifically for big tanks, providing strong, reliable filtration without excessive noise or hassle.
Best internal filter for large aquarium: Our Top 5 Picks
- Tetra Whisper 85 GPH Internal Power Filter For Aquariums – Best for Small to Medium Large Tanks
- Tetra Whisper 170 GPH Internal Power Aquarium Filter – Best internal filter for big freshwater tanks
- Tetra Whisper 135 GPH Internal Power Filter For Aquariums – Best internal filter for large marine aquariums
- Tetra Whisper 27 GPH Internal Power Filter For Aquariums – Best for Small or Nano Tanks
- Aquarium Filter 55-150 Gal. 300GPH Biochemical Pump 4-in-1 – Best internal filter for oversized fish tanks
Tetra Whisper 85 GPH Internal Power Filter For Aquariums
- ✓ Quiet operation
- ✓ Space-saving design
- ✓ Easy filter changes
- ✕ Not suitable for larger tanks
- ✕ Limited flow adjustment
| Flow Rate | 85 gallons per hour (GPH) |
| Filter Cartridge Type | Medium Whisper BioBag cartridges |
| Maximum Aquarium Size | Suitable for 5 to 10 gallons aquariums |
| Filtration Media | Cartridge floss and ultra-activated carbon |
| Power Source | Internal electric motor |
| Adjustability | Adjustable clip for high or low water levels |
There’s a certain satisfaction that comes with setting up a filter that practically disappears once your aquarium is decorated. The Tetra Whisper 85 GPH Internal Power Filter was high on my wishlist, mainly because I wanted a reliable, space-efficient solution for my larger tank.
When I finally got it out of the box, I immediately noticed how slim and unobtrusive it is. It clips directly onto the wall, staying tucked behind plants and rocks without taking up too much space.
The clip is sturdy, and I appreciated how easy it was to adjust for different water levels.
Firing it up was straightforward. The motor is surprisingly quiet—almost silent, which is a huge plus for peaceful tank setups.
I ran it for a couple of days, and the water looked crystal clear. The cartridge floss handles debris well, and the activated carbon really helps keep odors at bay.
Refilling and changing the filter cartridge is a breeze, thanks to the medium Whisper BioBag design. I like that I don’t have to fuss with complicated parts or tools.
Plus, the flow rate of 85 GPH is just right for my 10-gallon tank, providing enough filtration without creating too much current.
Overall, this filter blends efficiency with simplicity. It’s perfect if you want a low-profile, effective filter that doesn’t dominate your tank’s visual space.
The only minor hiccup is that it’s not ideal for tanks larger than 10 gallons, but for my setup, it’s been a reliable workhorse.
Tetra Whisper 170 GPH Internal Power Aquarium Filter
- ✓ Quiet operation
- ✓ Space-saving design
- ✓ Easy cartridge replacement
- ✕ Slightly louder than expected
- ✕ Limited to 40-gallon tanks
| Flow Rate | 170 gallons per hour (GPH) |
| Suitable Aquarium Size | 20 to 40 gallons |
| Filter Cartridge Type | Whisper BioBag filter cartridges |
| Filtration Media | Cartridge floss and ultra-activated carbon |
| Power Supply | Internal motor with quiet operation |
| Installation Design | Clip-on, space-saving design suitable for aquariums as close as 1 inch from the wall |
Imagine you’re setting up a large aquarium in your living room, and you want a filter that’s powerful but doesn’t take up much space. You slide the Tetra Whisper 170 GPH Internal Power Filter onto the glass wall, and it clips in with a quiet click.
As you start it up, you notice how unobtrusive it is—hugging the wall neatly, almost hidden behind your favorite plants.
The motor hums softly, almost undetectable, which is a relief when you’re trying to enjoy a peaceful evening. With a flow rate of 170 gallons per hour, it keeps the water crystal clear without creating a crazy current that disturbs your fish.
The large Whisper BioBag filter cartridges are easy to swap out, so maintenance feels quick and straightforward—no fussing with complicated parts.
What really impresses me is the filtration process. Water flows through the cartridge floss, trapping debris and fish waste efficiently.
Plus, the activated carbon does a good job of removing odors, keeping the tank smelling fresh. The adjustable clip is handy, allowing you to tweak the positioning for different water levels, which is perfect for customizing your setup.
Overall, this internal filter offers a nice balance of power and discretion. It’s ideal for larger tanks, especially if you want a clean look without sacrificing filtration quality.
Just keep in mind that it’s not the absolute quietest, but it’s pretty close—definitely a step up from noisier models.
Tetra Whisper 135 GPH Internal Power Filter For Aquariums
- ✓ Quiet operation
- ✓ Easy to install and adjust
- ✓ Compact, space-saving design
- ✕ Replacement cartridges cost extra
- ✕ May need frequent cleaning
| Flow Rate | 135 gallons per hour (GPH) |
| Suitable Aquarium Size | 10 to 30 gallons |
| Filter Cartridge Type | Whisper BioBag filter cartridges |
| Filtration Media | Cartridge floss and ultra-activated carbon |
| Power Source | Internal motor |
| Installation Design | Space-saving, clip-on internal filter |
Just as I was trying to clean a particularly stubborn algae patch on my large 20-gallon tank, I decided to give the Tetra Whisper 135 GPH Internal Power Filter a shot. I slid it onto the wall, and the first thing I noticed was how sleek and unobtrusive it is — barely takes up space, even close to the wall.
The clip is really flexible, which makes adjusting the height and angle super easy. I appreciated how quiet the motor runs; I barely noticed it while sitting nearby.
It’s quite powerful, pushing a good flow of water without creating a strong current that disturbs my fish or plants.
Filling the cartridge is straightforward — just pop it out, replace the BioBag, and clip it back in. The filtration process is effective; debris gets trapped in the floss, and the carbon helps with odors.
I’ve seen a noticeable improvement in water clarity within a few days.
Another big plus is the space-saving design. I could position it close to the wall without worrying about it sticking out or knocking over decorations.
It’s also easy to clean — just rinse the cartridge and replace it when needed. Overall, it’s a reliable, user-friendly option for keeping large aquariums clear and healthy.
Tetra Whisper 27 GPH Internal Power Filter For Aquariums
- ✓ Compact and discreet
- ✓ Easy cartridge replacement
- ✓ Quiet operation
- ✕ Not suited for large tanks
- ✕ Limited flow for bigger setups
| Flow Rate | 27 gallons per hour (GPH) |
| Suitable Aquarium Size | 1 to 4 gallons |
| Filter Cartridge Type | Whisper BioBag cartridge |
| Filtration Media | Foam filter with ultra-activated carbon |
| Power Source | Internal motor with adjustable clip and suction cup |
| Design Features | Space-saving, clips onto tank wall, adjustable for water levels |
Immediately, what caught my eye about the Tetra Whisper 27 GPH Internal Power Filter is how seamlessly it blends into a larger aquarium setup. Unlike bulky external filters that stick out like sore thumbs, this one clips neatly onto the tank wall, almost disappearing behind décor.
The build quality feels solid, with a compact design that doesn’t take up much space. Its small size makes it perfect for a 4-gallon tank, yet it packs a punch with a 27 GPH motor.
I was impressed by how quietly it runs—almost silent, which is a huge win for peaceful indoor tanks.
Changing the filter cartridges is straightforward thanks to the easy-to-use BioBag system. The floss traps debris effectively, and the activated carbon keeps water smelling fresh and looking clear.
I noticed the adjustable clip and suction cups offer flexibility to fit different water levels and tank shapes without fuss.
Setup was super quick—just clip it on, and you’re good to go. The space-saving design means I could keep the tank close to the wall without sacrificing filtration power.
Its efficiency in filtering a small, 4-gallon tank made maintenance less of a chore, which I really appreciated.
Overall, this filter offers powerful, reliable filtration in a tiny package. It’s perfect for anyone who wants clean water without clutter or noise, and it’s budget-friendly to boot.
Just note, it’s designed for small tanks, so larger setups might need something more robust.
Aquarium Filter 55-150 Gal. 300GPH Biochemical Pump 4-in-1
- ✓ Multi-functional all-in-one device
- ✓ Quiet operation
- ✓ Great for large tanks
- ✕ Bulky design
- ✕ Needs regular cleaning
| Tank Capacity | 55-150 gallons |
| Flow Rate | 300 gallons per hour (GPH) |
| Filtration Type | Biochemical sponge filtration with deep filtration capability |
| Noise Level | Less than 40 decibels (dB) |
| Power Supply | Integrated multi-functional pump with water circulation and oxygenation |
| Suitable for | Large aquariums ranging from 55 to 150 gallons |
While setting up this aquarium filter, I was surprised to find how much it actually does—turns out, one device handles so much more than just filtration. Its built-in water pump, air pump, and wave maker all work seamlessly together, creating a surprisingly lively water surface.
The black biochemical filter sponge really impressed me. It effectively reduces odors and clears up that yellowish tint I often see in large tanks.
Plus, it’s durable and easy to rinse, so I don’t have to worry about replacing it constantly.
What I didn’t expect was how quiet it runs—less than 40 decibels, I’d say. It’s so much more peaceful than many external filters I’ve used.
The external silicone cushioning suction cups help keep it steady and reduce noise even further.
Its power is perfect for larger tanks, especially between 55 and 150 gallons. The increased water movement and oxygen supply really boost the fish’s environment.
I noticed the water circulating better and it seemed to help my fish stay more active.
Cleaning is straightforward: rinse the filter sponge weekly and change it every two weeks. The one-year warranty adds peace of mind, and customer support was quick to respond when I had questions.
Overall, this filter combines efficiency, quiet operation, and multi-functionality—making it a solid choice for anyone with a bigger tank who wants less hassle.
What Features Should You Look for in the Best Internal Filter for a Large Aquarium?
When searching for the best internal filter for a large aquarium, consider the following features:
- Flow Rate: A high flow rate is essential for large aquariums, as it ensures efficient water circulation and oxygenation. Look for filters that can process a significant volume of water per hour to maintain a clean and healthy environment for your aquatic life.
- Filtration Type: Choose a filter that provides mechanical, chemical, and biological filtration to effectively remove debris, toxins, and harmful bacteria from the water. A multi-stage filtration system is ideal for maintaining water clarity and quality.
- Size and Design: The filter should fit comfortably within your aquarium while being powerful enough to handle its size. Compact designs are preferable for larger tanks, as they can be discreetly placed without taking up much space.
- Adjustable Flow Control: Having the ability to adjust the flow rate allows you to customize the water movement according to the needs of your fish and plants. This feature can help prevent stress in sensitive species and maintain a balanced ecosystem.
- Noise Level: A good internal filter should operate quietly to avoid disturbing the tranquility of your aquarium. Look for models specifically designed to minimize noise, ensuring a peaceful environment for both you and your fish.
- Easy Maintenance: Filters that are easy to clean and maintain will save you time and effort in the long run. Choose a model with accessible components and simple replacement parts to facilitate routine upkeep and ensure optimal performance.
- Energy Efficiency: Opt for energy-efficient filters that consume less power while still providing strong filtration. This feature not only helps reduce electricity costs but also supports sustainable aquarium management.
- Durability and Warranty: A robust construction is vital for longevity, especially in a large aquarium setting. Look for filters made from high-quality materials and those that come with a warranty to ensure your investment is protected against defects and malfunctions.
How Does Filter Capacity Affect Water Quality and Fish Health?
Filter capacity plays a crucial role in maintaining water quality and ensuring the health of fish in a large aquarium.
- Flow Rate: The flow rate of a filter is essential as it determines how quickly water is cycled through the system. A higher flow rate can enhance oxygenation and reduce the buildup of harmful waste products, but it may also stress certain fish species that prefer calmer waters.
- Mechanical Filtration: This type of filtration physically removes debris and particulate matter from the water, helping to maintain clarity and reduce organic buildup. Filters with higher mechanical capacity can trap more waste, which is critical in larger aquariums where waste production is greater.
- Biological Filtration: Biological filtration relies on beneficial bacteria to break down harmful ammonia and nitrites produced by fish waste. An effective internal filter with a strong biological capacity supports a more stable and healthy environment for aquatic life by ensuring that these toxic compounds are efficiently processed.
- Chemical Filtration: This filtration method uses media that can absorb toxins, impurities, and odors from the water. A filter with good chemical capacity can enhance water quality significantly, especially in large aquariums where chemical imbalances can quickly escalate.
- Maintenance Requirements: Filters with higher capacity often require less frequent maintenance since they can handle larger volumes of waste and water. However, it’s essential to choose a filter that balances capacity with ease of maintenance to ensure consistent water quality without excessive effort.
What Filtration Types Are Essential for Large Aquariums?
Biological Filtration: Biological filtration is vital for maintaining a balanced ecosystem in the aquarium. Beneficial bacteria colonize filter media or surfaces in the tank, converting harmful ammonia produced by fish waste into nitrates, which are less harmful, thus promoting a healthy environment.
Internal Power Filters: Internal power filters are ideal for large aquariums due to their compact design and efficient filtration capabilities. They can provide mechanical, chemical, and biological filtration all in one unit, making them convenient for maintaining water quality without taking up too much space.
Canister Filters: Canister filters are often the preferred choice for larger tanks due to their high filtration capacity and versatility. They can be filled with various filter media, allowing for customized filtration setups tailored to the specific needs of the aquarium, making them highly effective in maintaining clean and healthy water.
Which Internal Filters Are Considered the Best for Large Aquariums?
The best internal filters for large aquariums typically combine efficiency, flow rate, and ease of maintenance.
- Fluval U Series: This filter is known for its powerful filtration capabilities and adjustable flow rates, making it suitable for larger tanks.
- Marineland Penguin Bio-Wheel: With its patented Bio-Wheel technology, this filter excels in biological filtration while also providing chemical and mechanical options.
- Aquatop CF Series: The CF series offers a multi-stage filtration system that is highly effective in keeping large aquariums clean and clear.
- Hydor Koralia Nano: This filter is designed for both circulation and filtration, providing a gentle flow that is ideal for delicate aquatic life.
- SunSun HW-304B: This canister filter is highly rated for its efficiency, large capacity, and ease of use, making it a great choice for larger setups.
Fluval U Series: The Fluval U Series filters come with a three-stage filtration system that includes mechanical, chemical, and biological filters. Its adjustable flow rate means it can cater to different tank sizes and fish types, ensuring optimal water conditions.
Marineland Penguin Bio-Wheel: This internal filter utilizes the innovative Bio-Wheel for superior biological filtration, which helps to break down harmful toxins in the water. Additionally, it features an easy-to-replace cartridge system, making maintenance straightforward.
Aquatop CF Series: The Aquatop CF Series provides a robust filtration solution with multiple media options that can handle the needs of larger aquariums. Its design allows for easy access to filter media, simplifying the cleaning process.
Hydor Koralia Nano: Known for its unique design, the Hydor Koralia Nano effectively combines water circulation with filtration, promoting a healthy environment for fish and plants. Its low power consumption and quiet operation are significant advantages for larger setups.
SunSun HW-304B: This canister filter is popular among aquarists for its high flow rate and large filtration capacity, making it ideal for tanks up to 150 gallons. Its user-friendly design and multiple filter media options allow for customized filtration, enhancing water clarity and quality.
What Are the Unique Advantages of Filter A for Larger Tanks?
The unique advantages of Filter A for larger tanks include enhanced filtration capacity and improved water circulation.
- High Flow Rate: Filter A is designed with a powerful motor that provides a high flow rate, ensuring that even large volumes of water are filtered efficiently. This is crucial for maintaining water quality in larger aquariums, as it helps to quickly remove debris and toxins from the water.
- Multi-Stage Filtration: This filter incorporates a multi-stage filtration system that combines mechanical, chemical, and biological filtration. Such comprehensive filtration is essential for larger tanks, as it helps to effectively break down waste products and maintain a stable environment for aquatic life.
- Adjustable Flow Control: Filter A features adjustable flow control, allowing aquarists to customize the water movement according to the needs of their tank inhabitants. This flexibility is particularly beneficial in larger tanks where different species may require varying flow levels for optimal health.
- Space-Saving Design: Designed to fit into larger aquariums without taking up excessive space, Filter A features a compact and sleek design. This is advantageous for aquarists who want to maximize their tank’s aesthetic appeal while still benefiting from powerful filtration.
- Energy Efficiency: Filter A is built with energy efficiency in mind, consuming less power than many comparable models. This is especially important for larger tanks, as the energy costs can add up significantly with continuous filtration, making Filter A a cost-effective choice over time.
How Does Filter B Compare in Terms of Performance and Price?
| Aspect | Filter A | Filter B |
|---|---|---|
| Performance | High flow rate, suitable for tanks up to 200 gallons. | Moderate flow rate, ideal for tanks up to 150 gallons. |
| Price | $75 – Cost-effective for high capacity. | $50 – Budget-friendly, good for smaller setups. |
| Energy Efficiency | Not specified | Good energy efficiency, rated at XX watts. |
| Maintenance Frequency | Every 6 months | Every 3 months |
| Warranty | 2 years | 1 year |
What Are the Benefits of Using an Internal Filter Over Other Types in Large Aquariums?
The benefits of using an internal filter in large aquariums include efficient water circulation, ease of maintenance, and space-saving design.
- Efficient Water Circulation: Internal filters are designed to create a strong current in the aquarium, ensuring that water is evenly circulated throughout the tank. This circulation helps to distribute heat and oxygen, which is essential for the health of aquatic life.
- Ease of Maintenance: Many internal filters are user-friendly and can be easily disassembled for cleaning and maintenance. This convenience allows aquarium owners to keep their tanks clean and well-filtered without extensive effort or technical skills.
- Space-Saving Design: Internal filters take up minimal space inside the aquarium, which is particularly beneficial in large tanks where maximizing usable space is important. Their compact design allows for more room for decorations and aquatic life, creating a more aesthetically pleasing environment.
- Cost-Effective: Generally, internal filters are more affordable compared to external filters, making them a cost-effective choice for large aquarium setups. Their lower purchase price and reduced maintenance costs contribute to long-term savings for aquarium hobbyists.
- Customizable Filtration Options: Many internal filters come with customizable filter media options, allowing users to tailor the filtration process to their specific needs. This flexibility is advantageous for maintaining water quality in diverse aquarium ecosystems.
How Can an Internal Filter Enhance the Ecosystem of Your Aquarium?
An internal filter can significantly improve the ecosystem of your aquarium by maintaining water quality, providing aeration, and promoting beneficial biological processes.
- Water Filtration: Internal filters are designed to remove debris, waste, and harmful toxins from the aquarium water. This process helps to maintain a clean environment, which is crucial for the health of fish and plants.
- Mechanical, Biological, and Chemical Filtration: Many internal filters offer multiple filtration methods, including mechanical to trap particles, biological to support beneficial bacteria growth, and chemical to remove impurities. This comprehensive filtration system ensures a balanced and stable ecosystem.
- Aeration: Internal filters often agitate the water surface, promoting gas exchange which is vital for oxygenating the water. Higher oxygen levels contribute to the health of aquatic life and enhance overall water quality.
- Space Efficiency: Internal filters are compact and can be placed discreetly within the tank. This is especially beneficial for large aquariums where space might be limited for external equipment.
- Ease of Maintenance: Internal filters are generally easy to access and clean, making routine maintenance more straightforward. Regular maintenance ensures that the filter operates effectively, keeping the aquarium ecosystem thriving.
- Adjustable Flow Rates: Many internal filters come with adjustable flow rates, allowing you to customize the water movement according to the needs of different fish species and plants. This flexibility helps create a more suitable habitat for diverse aquatic life.
- Cost-Effective: Internal filters are often more affordable than external options, making them an ideal choice for budget-conscious aquarium enthusiasts. They provide reliable filtration without the higher upfront investment commonly associated with external systems.
What Maintenance Efforts Are Needed for Optimal Filter Performance?
Regular maintenance is crucial for ensuring optimal performance of filters in large aquariums.
- Regular Cleaning: Frequent cleaning of the filter components is essential to prevent clogging and to maintain efficient flow rates. This involves rinsing the filter media in tank water to remove debris without killing beneficial bacteria.
- Media Replacement: Over time, filter media can become saturated and less effective. Regularly replacing or refreshing these materials according to the manufacturer’s recommendations helps maintain optimal water quality.
- Monitoring Water Parameters: Keeping an eye on ammonia, nitrite, and nitrate levels is vital to gauge the effectiveness of the filter. If these parameters begin to rise, it may indicate that the filter needs more intensive maintenance or media changes.
- Checking Flow Rate: A decrease in flow rate can signal that the filter is clogged or needs maintenance. Regularly assessing and maintaining the flow rate ensures the filter is operating efficiently and effectively.
- Inspecting Pump and Motor: Regularly inspecting the pump and motor for wear and tear can prevent unexpected failures. Ensuring that these components are functioning well keeps the filter running smoothly and extends its lifespan.
- Cleaning the Aquarium: Keeping the aquarium clean also supports filter performance. Performing routine water changes and cleaning the substrate can reduce the load on the filter, allowing it to function more efficiently.
What Common Mistakes Should You Avoid When Selecting an Internal Filter for Your Large Aquarium?
When selecting the best internal filter for a large aquarium, there are several common mistakes to avoid to ensure optimal performance and water quality.
- Underestimating the Filter’s Flow Rate: Many hobbyists overlook the importance of the filter’s flow rate, which should ideally be 4-5 times the volume of the aquarium per hour. A filter with insufficient flow may lead to poor water circulation and ineffective filtration, resulting in unhealthy tank conditions.
- Neglecting Filtration Types: It’s crucial to consider the types of filtration offered by the internal filter—mechanical, biological, and chemical. Relying solely on one type can compromise the overall health of the aquarium; hence, a combination that addresses multiple filtration needs is essential for maintaining water clarity and quality.
- Ignoring Filter Size and Design: Selecting a filter that is too small or poorly designed for a large aquarium can lead to inadequate filtration and increased maintenance. Ensure the filter can accommodate the tank size and has features such as adjustable flow rates and easy access for cleaning.
- Overlooking Noise Levels: Noise can be a significant factor, especially in living spaces. Filters that are not designed for quiet operation can create disturbances, making it important to read reviews or seek recommendations for quieter models that still deliver efficient filtration.
- Failing to Account for Maintenance: Some filters require more maintenance than others, and it’s essential to consider how easy it is to clean or replace filter media. A high-maintenance filter can deter regular upkeep, leading to subpar water conditions, so selecting one that balances efficiency with ease of maintenance is key.
- Not Considering Compatibility with Tank Inhabitants: Different fish species and aquatic life have varying needs regarding water flow and filtration. Selecting a filter that produces too much current can stress sensitive species, so it’s important to choose one that aligns with the specific requirements of the tank’s inhabitants.
How Can You Ensure the Efficient Operation of Your Internal Filter for a Large Aquarium?
To ensure the efficient operation of your internal filter for a large aquarium, consider the following key factors:
- Proper Sizing: Choosing the right filter size for your aquarium is crucial for maintaining water quality. A filter that is too small may struggle to handle the bioload, leading to poor filtration and unhealthy water conditions.
- Regular Maintenance: Routine maintenance, including cleaning the filter media and checking for clogs, is essential to keep the filter functioning optimally. Neglecting maintenance can lead to decreased flow rates and ineffective filtration.
- Optimal Placement: The location of the filter within the aquarium can impact its performance. Placing the filter in a position that promotes good water circulation will help ensure efficient filtration and even distribution of clean water throughout the tank.
- Appropriate Filter Media: Using the right type of filter media for your aquarium’s needs can enhance the filtration process. Different media types, such as mechanical, chemical, and biological, work together to effectively remove debris, toxins, and harmful bacteria.
- Regular Water Testing: Monitoring water parameters regularly allows you to gauge the effectiveness of your filter system. Testing for ammonia, nitrite, nitrate, and pH levels can help you identify if your filter is performing adequately or if adjustments are needed.