10 Best Protein Skimmers 2025 in the United States

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.

The Simplicity 240DC Protein Skimmer is a versatile and efficient option for saltwater aquariums, suitable for tanks up to 240 gallons. Its adjustable DC pump speed allows for customized performance, which can be particularly useful for different tank setups and bioloads. The skimmer's cone shape design enhances its efficiency by improving the air and water mixing process, resulting in better skimming performance. Additionally, the small footprint makes it a good choice for aquariums with limited sump space.

The build quality is robust, utilizing materials like stainless steel, which ensures durability and longevity. The collection cup drain with cap is a convenient feature that simplifies regular maintenance, making it easier to clean without disassembling the entire unit.

The skimmer weighs 8.48 pounds, which might be on the heavier side for some setups. Its noise level, while not explicitly mentioned, can be a concern with DC pumps. Despite its modern design and efficient performance, the product’s ranking (#457 in Aquarium Filters) suggests there are more popular alternatives available in the market. Still, for those prioritizing build quality, efficiency, and ease of maintenance, the Simplicity 240DC Protein Skimmer is a strong contender.

The AquaReady HOB-1.5 protein skimmer is designed for saltwater aquariums up to 75 gallons, making it a solid choice for small to medium tanks, especially if your aquarium is within the specified rim thickness and height. As a hang-on-back (HOB) type, it’s easy to install without taking up extra space inside the tank. It features an innovative bubble plate that improves air and water mixing, helping to efficiently remove nutrients and keep your tank water clear.

The included pinwheel pump is ultra-quiet and energy-efficient, running at just 11 watts, which is beneficial for maintaining a peaceful environment. Built to handle various bio-loads from light to heavy, it can adapt to different levels of aquarium waste. The adjustable collection cup adds convenience when it comes to maintenance, allowing you to tailor the setup to your needs. However, the break-in period during the first week might introduce some extra microbubbles in your aquarium, which could temporarily affect water clarity. Users should also ensure their tank rims are compatible for proper hanging due to the skimmer’s size and weight.

This protein skimmer delivers effective filtration performance and quiet operation, making it an easy-to-use external skimmer option for hobbyists with small to medium saltwater tanks.