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The Best Aquarium External Filters for 2025
Herein are listed the top 5 best aquarium external filters for 2025, based on Real Aquatics 2024 sales and reliability data from Real Aquatics outlets on eBay, Amazon and official websites.
The list consists of both external and hang-on filters only, and does not include variations such as internal filters and sponge filters - these are featured in separate awards.

Expert or Beginner - What type of Aquarist are you?
The beginner stage, where you do not know much about fishkeeping but are eager to learn. From a supplier's point of view it is here where the most careful management must apply, and for the buyer the realisation that being a serious fishkeeper means you need to be responsible.

Black Beard Algae | The Lowdown and the Cause
Preventing blackbeard algae involves maintaining balanced lighting, nutrient levels, and CO2, as well as quarantining new additions to your aquarium. Blackbeard algae, also known as brush algae or Audouinella, can be quite a nuisance in aquariums. Here are the primary causes of its growth.

Video | Fancy Goldfish in a Vibrant Aquarium
Dive into a breathtaking underwater world as we showcase mesmerizing goldfish swimming gracefully in a vibrant aquarium! With their stunning blue, orange, and black patterns, these beautiful fish bring a splash of color to their lively habitat, surrounded by lush aquatic plants and decorative ornaments.

Video | Cherry Shrimp in a Planted Mossy Aquarium
Watch as vibrant green moss balls gracefully float and bob in a serene planted aquarium, creating a hypnotic visual experience. The delicate movements of cherry shrimp add a lively touch to the scene, showcasing their vibrant red hues against the lush greenery.

Fantasy Fish AI: Animated Fancy Goldfish Feeding Time

What are aquarium Fish Nets useful for?
