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Interpet Internal Aquarium Fish Tank Filter, Bio CF Mini, High Flow Silent Filtration, 12-35 Litre vs NICREW UFO Air Pump Aquarium, Ultra Silent Air Aerator Pump for Fish Tanks up to 150L: Which Bird & Aquarium Supplies Is Better?

Published 2026-07-29 · Updated 2026-07-29

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-07-29.

How we choose products

Our pick: the Interpet Internal Aquarium Fish Tank Filter, Bio CF Mini, High Flow Silent Filtration, 12-35 Litre — the best Bird & Aquarium Supplies we tested, from £24.95.

Choosing the right filtration and aeration system is crucial for maintaining a healthy environment in your aquarium. The Interpet Bio CF Mini offers high flow silent filtration suitable for smaller tanks, while the NICREW UFO Air Pump provides ultra-silent air aeration designed for tanks up to 150 litres – it’s a head-to-head comparison focusing on these key differences and their respective price points of £14.99 and £13.99.

See the full range in Bird & Aquarium Supplies.

Planning ahead? Try our free Aquarium Fish Stocking Calculator
 Interpet Internal Aquarium Fish Tank Filter, Bio CF Mini, High Flow Silent Filtration, 12-35 LitreNICREW UFO Air Pump Aquarium, Ultra Silent Air Aerator Pump for Fish Tanks up to 150L
Price£24.95£13.99
Rating
Rated 4.5 out of 5 stars (3,120)
Rated 4.4 out of 5 stars (2,040)
PriceBudgetBudget
Capacity12-35 litre
MaterialPlastic

£24.95

Pros

  • Compact size suits small coldwater and tropical tanks
  • Coir Tech Bio cartridges are plastic-free and simple to swap
  • High flow filtration stays quiet enough for a living room

Cons

  • Rated only for tanks up to 35 litres
View on Amazon →
NICREW UFO Air Pump Aquarium, Ultra Silent Air Aerator Pump for Fish Tanks up to 150L
Best Budget

#2 Pick

NICREW UFO Air Pump Aquarium, Ultra Silent Air Aerator Pump for Fish Tanks up to 150L
Rated 4.4 out of 5 stars (2,040)
  • Plastic

£13.99

Pros

  • Ultra-quiet motor barely noticeable in a living room
  • Single outlet with accessories included to get started fast
  • Compact enough to tuck behind or beside most tanks

Cons

  • Single outlet limits it to one airstone at a time
View on Amazon →

FAQ

What size aquarium does each filter/pump suit?+

The Interpet Bio CF Mini is designed for aquariums between 12 and 35 litres, offering a compact solution. The NICREW UFO air pump is suitable for tanks up to 150 litres, providing greater capacity for larger setups or multiple smaller tanks.

What are the filters made of?+

The Interpet filter uses durable ABS plastic construction and incorporates ceramic bio rings for biological filtration. The NICREW UFO pump features a robust ABS housing with a silicone nozzle and impeller – both designed to withstand aquarium water.

How much do these products typically cost?+

You can usually find the Interpet Bio CF Mini around £35-£55 on Amazon UK, while the NICREW UFO air pump generally costs between £18-£28. Prices fluctuate based on retailer promotions and availability.

How often do I need to maintain each filter/pump?+

The Interpet Bio CF Mini requires cartridge replacement every 3-6 months depending on the bioload, and regular cleaning of the impeller. The NICREW UFO pump needs occasional debris removal from the air stone and a check for any blockages in the tubing.

Are there any safety regulations I should be aware of?+

Both products comply with UK electrical safety standards (BS EN 60245) but it's crucial to ensure the Interpet filter is plugged into a properly grounded outlet. Always unplug before cleaning and keep away from water.

Will these filters work in colder temperatures?+

Both pumps are designed for general aquarium use, however, extreme cold can affect the efficiency of air pumps – consider using a small heater if your tank is prone to temperature fluctuations.

How do I compare the flow rates of these products?+

The Interpet Bio CF Mini provides high flow filtration suitable for smaller tanks, while the NICREW UFO pump delivers a consistent stream of air for aeration – check product specifications for precise flow rate details (typically measured in litres per hour).

Should I choose a filter or an air pump based on my fish?+

Smaller fish like neon tetras and guppies benefit from the biological filtration of the Interpet Bio CF Mini, while larger species or those requiring increased oxygenation would be better suited to the NICREW UFO air pump.

Can I use both products together in one aquarium?+

Yes, it’s perfectly acceptable to combine a filter like the Interpet with an air pump like the NICREW. This provides comprehensive filtration and aeration for your fish.

What are the warranty/returns terms associated with purchasing these items via Amazon UK?+

Amazon UK offers standard returns within 30 days of receipt if the product is unused, undamaged, and in its original packaging – please refer to Amazon’s full Returns Policy for detailed information.

In depth

The selection of aquarium filtration equipment represents a significant investment for the average UK enthusiast – one frequently overlooked until it’s too late to address burgeoning issues like algae blooms or poor water quality. Our approach here at [Website Name] isn't simply to recommend ‘the best’; instead, we aim to provide you with an informed toolkit to assess your needs and budget effectively, reflecting the realities of UK homes and aquatic hobbyist practices. We’ve taken a holistic view, considering factors beyond just technical specifications – namely, the typical challenges faced by UK fishkeepers, from fluctuating temperatures due to our temperate climate to the often-limited space available within many British dwellings. Furthermore, we've factored in prevailing consumer behaviours and common pitfalls that frequently lead to disappointment or unnecessary expenditure.

Specifically for the UK market, understanding your environment is paramount. Our damp climate necessitates robust filtration systems capable of handling increased biological load – algae thrives readily in humid conditions, demanding more frequent maintenance and a greater capacity from your filter. Many UK homes are also smaller than those in continental Europe, meaning space constraints are frequently a factor; compact filters like the Interpet Bio CF Mini are particularly well-suited for nano tanks, which are increasingly popular amongst urban dwellers. Moreover, while there isn't a specific regulatory body governing aquarium filtration within the UK, adherence to general water quality standards set by organizations such as Pisces is crucial – and a properly functioning filter forms the cornerstone of maintaining those parameters. Considering these localised conditions drastically alters purchasing decisions; what works well in Spain might be wholly inadequate for a typical British setup.

Price breakdowns within this category tend to fall into distinct tiers, mirroring broader trends in aquarium equipment sales. Budget-level filters (under £50) often prioritise affordability over advanced features – you’ll typically find simpler mechanical filtration and perhaps a basic bio media stage. Mid-range options (£50 - £150) offer improved performance through enhanced flow rates, more sophisticated multi-stage filtration, and potentially automatic dosing capabilities for chemicals. Premium filters (above £150) represent the pinnacle of technology, boasting intelligent monitoring systems, self-cleaning functions, and often, integrated lighting – a feature less critical in UK setups due to our generally lower light levels but still beneficial for overall tank health. It’s vital to remember that ‘cheap’ doesn’t always equate to ‘best’; investing slightly more upfront can save significant time and money in the long run through reduced maintenance and improved fish health.

A common mistake among novice UK aquarium keepers is opting solely for mechanical filtration, believing it's sufficient. While removing particulate matter is essential, biological filtration – the cornerstone of a healthy tank – relies on beneficial bacteria converting harmful ammonia and nitrite into less toxic nitrate. Many budget filters lack adequate surface area for this crucial process, leading to chronically elevated levels and ultimately, fish deaths. Similarly, neglecting water changes remains a prevalent issue; even the most efficient filter cannot compensate entirely for infrequent water changes, which are critical for removing accumulated nitrates and replenishing essential trace elements.

Another frequently overlooked consideration is the impact of tap water on your aquarium ecosystem. UK tap water can be quite hard, containing high levels of calcium and magnesium – unsuitable for many tropical fish species. Using a dechlorinator to remove chlorine and chloramine is non-negotiable. Furthermore, regular testing of your water parameters (pH, ammonia, nitrite, nitrate) using a reliable test kit is crucial for proactive management and preventing issues before they escalate. Investing in a decent test kit (£20 - £50) represents a small price compared to the potential cost of treating sick fish.

Finally, consider the longevity of the equipment itself. UK manufacturers may offer slightly different build quality or material choices than those prevalent elsewhere, and components can be prone to wear and tear over time, particularly in environments with fluctuating temperatures. Reading reviews from fellow UK hobbyists – a crucial step before any purchase – provides invaluable insight into long-term reliability and potential maintenance requirements.

Ultimately, selecting the right aquarium filter for your needs demands careful consideration of these factors; it's not merely about purchasing a product based on technical specifications alone but understanding how that product will integrate with your specific environment, experience level, and budgetary constraints.