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10 Best Protein Skimmers 2025 in the United States
#1
Winner
MagTool Aquarium in-Sump DC Protein Skimmer, with Controllable DC Pinwheel Pump for Up to 50-100Gal Reef Tank (N100 Plus)
The MagTool Aquarium in-Sump DC Protein Skimmer is designed for reef tanks ranging from 50 to 100 gallons. It offers powerful filtration in a compact size, making it ideal for space-limited installations. With a footprint of just 5.0x4.3 inches, it efficiently handles both heavy and light bio-loads. The skimmer features a controllable 265 GPH DC sine wave pump equipped with special needle wheel impellers, which generate a large volume of fine bubbles for effective skimming.
Rating
9.9
Chosen by1,202
Air Intake and Water Flow Rate
Build Quality and Materials
Noise Level
Most important from
67 reviews
#2
Reef Octopus OCTO Regal 150 SSS Space Saver Protein Skimmer
The Reef Octopus OCTO Regal 150 SSS Space Saver Protein Skimmer is designed for aquariums of varying sizes, making it versatile for a range of tank setups. It is effective for tanks up to 210 gallons with light filtration needs, 160 gallons with medium filtration demands, and 100 gallons for high filtration requirements. This makes it suitable for both moderate and heavily stocked aquariums. Its small footprint (9” x 7.5”) and height (23.6”) ensure it doesn't take up much space, which is beneficial for users with limited sump space.
Rating
9.8
Air Intake and Water Flow Rate
Build Quality and Materials
Ease of Maintenance
Most important from
11 reviews
#3
Reef Octopus Classic 110-INT Needle Wheel Protein Skimmer for Aquarium
The Reef Octopus Classic 110-INT Needle Wheel Protein Skimmer is designed for tanks up to 100 gallons, making it suitable for medium-sized aquariums. This skimmer features a needle wheel type which is known for efficiently breaking up bubbles to remove organic waste from the water. The new pinwheel impellers enhance its performance, potentially doubling its efficiency compared to older models, ensuring effective skimming action in your tank.
Rating
9.7
Build Quality and Materials
Ease of Maintenance
Most important from
286 reviews
Top 10 Best Protein Skimmers 2025 in the United States
#1
Winner
9.9 score
MagTool Aquarium in-Sump DC Protein Skimmer, with Controllable DC Pinwheel Pump for Up to 50-100Gal Reef Tank (N100 Plus)
MagTool Aquarium in-Sump DC Protein Skimmer, with Controllable DC Pinwheel Pump for Up to 50-100Gal Reef Tank (N100 Plus)
Tank Size Compatibility: 50-100 gallons
Type of Skimmer: In-Sump DC Skimmer
Air Intake and Water Flow Rate: 265 GPH
Build Quality and Materials: Plastic, Metal
Ease of Maintenance: Compact size may make access tricky
Noise Level: Near-silent operation
Chosen by 1202 this week
Reef Octopus OCTO Regal 150 SSS Space Saver Protein Skimmer
Reef Octopus OCTO Regal 150 SSS Space Saver Protein Skimmer
Tank Size Compatibility: Up to 210 gallons
Type of Skimmer: Protein Skimmer
Air Intake and Water Flow Rate: Controllable DC 2500S Pinwheel Pump
Build Quality and Materials: Modern plastic materials
Ease of Maintenance: Manual cleaning required
Noise Level: Quieter due to DC pump
Reef Octopus Classic 110-INT Needle Wheel Protein Skimmer for Aquarium
Reef Octopus Classic 110-INT Needle Wheel Protein Skimmer for Aquarium
Tank Size Compatibility: up to 100 gallons
Type of Skimmer: needle wheel
Ease of Maintenance: user-friendly design
Noise Level: quieter than other options
Reef Octopus OCTO Classic 1000 HOB Protein Skimmer Bundle (3 items)
Reef Octopus OCTO Classic 1000 HOB Protein Skimmer Bundle (3 items)
Tank Size Compatibility: up to 130 gallons
Type of Skimmer: HOB (hang-on-back)
Air Intake and Water Flow Rate: 420 L/h (air), 350 L/h (water)
Build Quality and Materials: solid acrylic
Ease of Maintenance: straightforward
Noise Level: low
Reef Octopus Classic 202-S Protein Skimmer
Reef Octopus Classic 202-S Protein Skimmer
Tank Size Compatibility: 250 Gallons
Type of Skimmer: in-sump
Build Quality and Materials: Acrylic
Ease of Maintenance: straightforward
Related Products
Reef Octopus OCTO Regal 150-INT In-Sump Protein Skimmer
Reef Octopus OCTO Regal 150-INT In-Sump Protein Skimmer
Tank Size Compatibility: up to 210 gallons
Type of Skimmer: In-Sump Skimmer
Build Quality and Materials: Acrylic, Foam
Ease of Maintenance: regular cleaning needed
Noise Level: generally acceptable
Coralife Aquarium Fish Tank Marine Salt Water DC-Controlled Variable Speed Mini Protein Skimmer, Up To 65 Gallons
Coralife Aquarium Fish Tank Marine Salt Water DC-Controlled Variable Speed Mini Protein Skimmer, Up To 65 Gallons
Tank Size Compatibility: Up to 65 Gallons
Type of Skimmer: Hang on Back DC-Controlled
Air Intake and Water Flow Rate: Variable speed pump
Build Quality and Materials: Quality materials, titanium mesh
Ease of Maintenance: Easily removable collection cup
Simplicity 240DC Protein Skimmer for Saltwater Aquariums
Simplicity 240DC Protein Skimmer for Saltwater Aquariums
Tank Size Compatibility: up to 240 gallons
Type of Skimmer: Protein Skimmer
Air Intake and Water Flow Rate: adjustable DC pump speed
Build Quality and Materials: robust, stainless steel
Ease of Maintenance: collection cup drain with cap
OCTO Classic 2000-HOB Protein Skimmer
OCTO Classic 2000-HOB Protein Skimmer
Tank Size Compatibility: up to significant size
Type of Skimmer: hang-on-back model
Air Intake and Water Flow Rate: efficient
Build Quality and Materials: robust, durable
Ease of Maintenance: reasonably straightforward
Noise Level: a bit noisy
#10
8.6 score
Reef Octopus Classic 150SSS Protein Skimmer
Reef Octopus Classic 150SSS Protein Skimmer
Tank Size Compatibility: up to 210 gallons
Type of Skimmer: Protein Skimmer
Air Intake and Water Flow Rate: Aquatrance 2000S pump
Build Quality and Materials: robust, durable materials
Ease of Maintenance: straightforward
Noise Level: relatively low
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Buying Guide for the Best Protein Skimmers
Choosing the right protein skimmer for your aquarium is crucial for maintaining a healthy and clean environment for your aquatic life. Protein skimmers help remove organic waste before it breaks down into harmful substances, ensuring better water quality. When selecting a protein skimmer, consider the size of your tank, the type of skimmer, and the specific needs of your aquarium inhabitants. Here are some key specifications to help you make an informed decision.Tank Size CompatibilityTank size compatibility refers to the range of aquarium sizes that a protein skimmer can effectively service. This is important because using a skimmer that is too small for your tank will result in inadequate waste removal, while an oversized skimmer may be inefficient and waste energy. Skimmers are typically rated for specific tank sizes, such as up to 50 gallons, 50-100 gallons, or over 100 gallons. To pick the right one, match the skimmer's rating to your tank size, ensuring it can handle the volume of water and the bioload of your aquarium.
Type of SkimmerThere are several types of protein skimmers, including hang-on-back (HOB), in-sump, and external skimmers. The type of skimmer is important because it determines how and where the skimmer will be installed in your aquarium setup. HOB skimmers are ideal for smaller tanks or those without a sump, as they are easy to install and maintain. In-sump skimmers are designed to be placed inside a sump and are suitable for larger tanks with more complex filtration systems. External skimmers are placed outside the tank or sump and are often used in large or commercial setups. Choose the type that best fits your aquarium's design and space constraints.
Air Intake and Water Flow RateThe air intake and water flow rate of a protein skimmer determine its efficiency in removing waste. Higher air intake and water flow rates generally mean better performance, as more water is processed and more waste is removed. Skimmers are often rated by their air intake in liters per hour (L/h) and water flow rate in gallons per hour (GPH). For smaller tanks, a lower flow rate may be sufficient, while larger tanks will benefit from higher rates. Consider the bioload of your tank and choose a skimmer with appropriate air intake and water flow rates to ensure optimal performance.
Build Quality and MaterialsThe build quality and materials of a protein skimmer affect its durability and longevity. High-quality skimmers are typically made from materials like acrylic or high-grade plastics, which are resistant to corrosion and wear. This is important because a well-built skimmer will last longer and require less maintenance. When evaluating build quality, look for sturdy construction, reliable seals, and quality components. Investing in a well-made skimmer can save you money and hassle in the long run.
Ease of MaintenanceEase of maintenance refers to how simple it is to clean and maintain the protein skimmer. Regular maintenance is crucial for keeping the skimmer functioning efficiently and prolonging its lifespan. Skimmers with easily accessible parts, simple disassembly, and clear instructions are easier to maintain. Consider how often you are willing to perform maintenance and choose a skimmer that fits your routine. A skimmer that is easy to clean will ensure consistent performance and reduce the risk of malfunctions.
Noise LevelThe noise level of a protein skimmer can impact the overall enjoyment of your aquarium. Some skimmers can be quite loud, which may be disruptive in a home or office setting. Noise levels are influenced by the design of the skimmer and the quality of its components. Look for skimmers that are specifically designed to operate quietly, often featuring noise-reducing technologies or components. If you value a quiet environment, prioritize skimmers with low noise levels to ensure a peaceful aquarium experience.