10 Best Protein Skimmers 2025 in the United States

The Reef Octopus OCTO Regal 150-INT In-Sump Protein Skimmer is designed for aquarists who are looking for an efficient way to maintain water quality in medium to large tanks, accommodating up to 210 gallons with light filtration demands. A standout feature is its small footprint, making it suitable for setups with limited space, and the DC controllable pump allows for energy-efficient operation tailored to your aquarium's needs.

One of the strengths of the OCTO Regal is its build quality. Made from durable materials like acrylic and foam, it promises longevity and effectiveness. The adjustable pump with five energy-efficient power settings is a plus, as it gives users flexibility in managing the skimmer's operation based on specific tank requirements.

However, there are some considerations to keep in mind. While the skimmer excels in many areas, it might not perform as efficiently at its maximum rated tank size under heavy filtration demands, particularly for aquariums up to 100 gallons. This could be a drawback for users with larger bioloads. Additionally, the recommended sump water depth of 6-8 inches may limit compatibility with some setups, and maintenance may require regular cleaning due to its design. Noise level is generally acceptable, but some users might still find it a bit noticeable, especially in quieter environments. If you're looking for a reliable protein skimmer for a medium to large aquarium that requires manageable noise levels and efficient filtration without taking up much space, the Reef Octopus OCTO Regal 150-INT could be a strong contender. Just ensure your tank setup aligns with its specifications for optimal performance.

The Tunze 9430.000 DOC Skimmer is a compact protein skimmer designed for marine aquariums and is well-regarded by users, reflected in its high customer rating. It is made in Germany, known for solid build quality, and comes with a 2-year warranty along with readily available spare parts, which suggests it’s built for durability and long-term use. Weighing 11 pounds and measuring about 14 x 12 x 19 inches, it fits nicely in medium-sized tanks.

The skimmer type is compact and efficient, suited to removing organic waste effectively to keep water clean. Tunze products typically offer reliable performance and relatively quiet operation, making this skimmer a good choice for those sensitive to noise. Maintenance is straightforward with a design that allows easy access to parts, which is important for regular cleaning.

This Tunze model is a solid option for anyone looking for a durable, well-supported protein skimmer with a reputation for quality and quiet operation.

The OCTO Classic BH-2000 Protein Skimmer is designed for aquariums up to 208 gallons, making it suitable for medium to large tanks. This hang-on skimmer features an Aquatrance 2000 Pinwheel pump, known for its efficient air intake and water flow rate, which helps in maintaining water quality by removing proteins and organic compounds effectively.

The adjustable surface skimmer attachment adds flexibility, allowing for better customization based on specific tank needs. The skimmer's build quality is robust, made from durable acrylic, which ensures longevity and reliability. However, its 21-inch height and 4-inch width may require some consideration for installation space.

While not overly complicated, maintenance can be a bit time-consuming, as it is not dishwasher safe and needs regular manual cleaning. Noise levels are moderate, typical for skimmers of this type, but may not be suitable for those seeking a completely quiet aquarium setup. The OCTO Classic BH-2000 is a solid choice for hobbyists with larger tanks who value effective protein removal and durability, though they should be prepared for regular maintenance and some noise.