Hang On Back filters, often called HOB filters, are a simple, effective, and affordable way to keep your aquarium water clean and clear. These filters hang neatly on the back of your tank, combining mechanical and biological filtration in one convenient unit.
HOB filters are popular among fishkeepers because they’re easy to install, maintain, and service. With no complicated plumbing or bulky canisters, they’re perfect for beginners and experienced aquarists alike. Their design also provides a lot of surface movement, which helps increase oxygen levels in the water. They are not as effective as some other options and can be a bit more noisy as the water splashes.
These filters work by drawing water up through an intake tube, passing it through cartridges or sponges to remove debris and waste, and returning clean, filtered water back into the aquarium. Many models also include compartments for activated carbon or other media to remove odours and toxins.
Selecting the right filter depends on your tank size, fish load, and water quality needs. We stock a wide range of filters to suit small nano tanks through to large aquariums.
💡 Not sure which aquarium filter is best? Contact our team for free expert advice and recommendations.

