Aquarium & Fish Keeping — Aquarium Filters & Pumps (2026)

Pros

• One of the best-selling internal filters on Amazon UK with thousands of reviews
• Simple suction-cup mounting and easy-clean cartridge for quick maintenance
• Rated for tanks up to 68 litres, covering most starter aquariums

Cons

• Cartridge replacements are an ongoing running cost

Pros

• Entry point into Fluval’s well-regarded 07 canister series, quieter than earlier models
• Consumes as little as 10W, similar to a single LED bulb
• Multi-stage media basket handles mechanical, chemical and biological filtration

Cons

• Canister filters need more setup and priming than a simple internal filter

Pros

• Pumps 550-1450 l/h with steady pressure that holds up over time
• Up to 25% quieter than the previous 06 generation
• Large media capacity suits medium to large community tanks

Cons

• Bulkier unit needs cabinet or under-stand space to hide the canister

Pros

• Detachable spray bar doubles as a wave maker or surface oxygenator
• Five suction cups keep it firmly in place, mountable horizontally or vertically
• Budget-friendly option that is still one of the best-reviewed small filters on Amazon UK

Cons

• Only suited to smaller tanks up to 20 litres

Pros

• Orientable 180-degree outlet nozzle lets you fine-tune surface agitation and current direction
• Built-in Venturi valve adds supplemental oxygen while it filters
• Amazon's Choice pick sized for small 10-40 litre nano and starter tanks

Cons

• Only suited to smaller tanks, larger aquariums need a higher-capacity Tetra IN model

Pros

• Twin outlets let you run two air stones or ornaments from one pump
• Adjustable flow control tunes bubble rate to the tank size
• Comes with air stones, tubing, check valves and connectors included

Cons

• Some background hum is audible in a quiet room at night

Pros

• Next size up from the popular PF1, rated for tanks up to 81 litres
• Built-in venturi aerates the water while it filters
• Simple rocker switch and suction-cup mounting for quick setup

Cons

• Cartridge replacements are an ongoing running cost

Pros

• Classic Eheim canister build known for running reliably for years with minimal maintenance
• Large media capacity suits bigger community and cichlid tanks
• Quiet operation compared with many budget external filters

Cons

• Sized for larger tanks, so overkill and costly for a small setup

Pros

• Basket-in-basket media tray design gives flexible media capacity for large tanks
• High-performance pump handles heavily stocked or larger aquariums with ease
• Backed by a perfect 5-star average across reviewers so far

Cons

• High price and large canister size only make sense for bigger tank setups

Pros

• 3-stage filtration handles mechanical, chemical and biological cleaning in one unit
• Compact internal design suits tanks up to 55 litres without external plumbing
• Simple to service, with easy-access media compartments

Cons

• Mixed reviews on long-term impeller noise as the unit ages

Pros

• Traps larger debris before it reaches the main filter media, extending its life
• One of the best-reviewed filter media products on Amazon UK
• Straightforward to rinse and reuse between full replacements

Cons

• Needs replacing every 4-6 weeks once clogged, an ongoing running cost

Pros

• Entry-level filter from Juwel's well-regarded Bioflow system, built for tanks up to 80 litres
• Multi-stage foam media handles mechanical and biological filtration
• Widely reviewed and trusted by Juwel aquarium owners

Cons

• Best matched to Juwel tanks, so may need adapting for other brands

Pros

• Fully equipped and ready to connect, including a built-in quick-start priming device
• Greenline energy-saving design from a long-established German aquatics brand
• Comes complete with filter media, so nothing extra to buy on day one

Cons

• Premium price versus entry-level internal filters

Pros

• Highly porous sintered glass structure gives beneficial bacteria a large surface area to colonise
• Reusable biological media lasts far longer than disposable cartridges
• Well-reviewed German-engineered media that fits most external and internal filters

Cons

• Needs several weeks to fully mature before reaching peak biological effectiveness

Pros

• Greenline energy-saving design keeps running costs low for an internal filter
• Multi-chamber media basket handles mechanical and biological filtration in one unit
• From a long-established German aquatics brand with wide parts availability

Cons

• Still a newer listing with only a handful of reviews so far

Pros

• Automatic shut-off mechanism isolates water flow when the hose is disconnected
• Genuine Fluval replacement part fits the whole 07 canister filter range
• Makes routine maintenance and media changes far less messy

Cons

• Fits only the 07 series canisters, not compatible with other Fluval filter lines

Pros

• Large filter volume gives strong mechanical and biological filtration for its size
• Greenline energy-saving pump keeps running costs low
• Compact internal design suits tanks where an external canister is impractical

Cons

• Newer listing with a limited UK review base so far

Pros

• Quiet running single-outlet pump sized for 51-100 litre aquariums
• Boosts oxygen exchange and surface agitation for healthier fish
• Interpet is a well-established UK aquatics brand with wide spares availability

Cons

• Single outlet limits it to one airstone or ornament at a time