10 Best External Aquarium Filters

The Fluval FX6 High Performance Canister Filter is designed for aquarium enthusiasts managing large fish tanks. It boasts an impressive flow rate, circulating approximately 2130 liters of water per hour, making it suitable for up to 1500-liter aquariums. This high capacity is ideal for those with larger fish or more densely stocked tanks. A standout feature is the smart microchip technology, which optimizes pump performance and ensures the filter operates efficiently by auto-evacuating trapped air every 12 hours. This reduces maintenance and ensures continuous optimal performance.

The filter’s design also aids in ease of maintenance. It includes stackable media baskets allowing for customizable filtration and preventing water bypass, ensuring all water passes through the filter media. Additionally, the self-starting design and easy water change system eliminate the need for manual siphoning, making it user-friendly.

However, the FX6 is relatively large and heavy, weighing 9.03 kg, which may be cumbersome for smaller aquarium setups or locations with limited space. Also, while the advanced features offer great convenience, they may come with a learning curve for beginners not familiar with canister filters.

In terms of noise level, the Fluval FX6 operates quieter than some competitors, which can be crucial for domestic settings. However, as with any equipment, occasional maintenance may be needed to ensure the noise level remains low. The Fluval FX6 is a robust option for large aquarium owners seeking a powerful and efficient filtration system. It balances performance with ease of maintenance, making it a strong contender in its category.

The Fluval 107 External Filter is a well-regarded choice for aquarium enthusiasts, offering several appealing features that cater to the needs of maintaining a healthy aquatic environment. A standout feature is its efficient technology construction that promotes powerful pump performance while keeping energy consumption low. This means it can maintain a strong flow rate of 550 liters per hour, making it suitable for smaller to medium-sized aquariums. The filter's motor is designed to deliver consistent pumping power and pressure, which speaks to its durability and reliability over time.

An important aspect for many users is the noise level, and the Fluval 107 excels here with its re-engineered pump, reducing noise by up to 25% compared to previous models. This makes it a great option for those who prefer a quieter aquarium setup. Ease of maintenance is another strength, with features like easy-to-clean components and adjustability, ensuring that regular upkeep does not become a daunting task. Its compact size and lightweight design further enhance its appeal, as it can be easily adapted to fit within various aquarium setups.

However, there are some considerations to keep in mind. While the flow rate is efficient for certain tank sizes, those with larger aquariums might find it lacking in power for their needs. Additionally, while the product dimensions are stated as 1x1x1 cm, this is likely incorrect and could cause confusion when determining compatibility with specific aquariums. The Fluval 107 External Filter is a strong contender for those seeking an energy-efficient, quiet, and easy-to-maintain filter for small to medium aquariums, though larger aquarium owners may need to look for alternatives with higher flow capacities.

The AllPondSolutions 1400EF External Aquarium Filter is designed for aquariums up to 600 litres, making it suitable for coldwater, tropical, or marine tanks. It offers a strong flow rate of 1400 litres per hour, which should keep the water well-circulated and clean for medium to large tanks. The filter comes with a multi-layer filtration system and includes filter media, meaning you won’t need to purchase additional materials upfront. Users appreciate its quiet operation, which helps maintain a peaceful environment around the tank.

The self-priming feature and easy-clean tap shut-off system simplify maintenance by allowing you to clean or service the filter without much hassle or water spillage. In terms of size, it measures 43 x 25.8 x 25.8 cm and weighs around 7.8 kg, so it will require some space near your aquarium and isn’t the lightest, but it’s a reasonable size for the capacity it handles. It uses 20mm hoses, so ensure your setup can accommodate this diameter.

The filter is energy efficient and rated well; some users might find it a bit large for very small tanks or limited spaces. Since it’s an older model (available since 2009), newer filters may offer more modern features or quieter operation. However, with strong customer reviews and reliable performance, this filter is a solid choice for hobbyists who want an effective, easy-to-use external filter that handles a variety of aquarium types.