In this guide we’ll look at the best pond filter boxes for the UK market.
We’ve compared build quality, reliability, ease-of-use and cost
to give you our top recommendations.

What Is The Best Pond Filter Box?

  • Features
  • 10,000 litre per hour flow rate
  • UV light system
  • Includes pump
  • Cost
Rating
9.9/10
  • Features
  • Suitable for ponds up to 3600 litres
  • Pollutant level and temperature indicator
  • Easy to clean
  • Cost
Rating
9.7/10
  • Features
  • Ideal for ponds up to 6000 litres
  • Includes pump
  • Includes UV steriliser
  • Cost
Rating
9.4/10
  • Features
  • Suitable for ponds up to 2500 litres
  • UV clarification
  • Low-cost option
  • Cost
Rating
9.1/10
  • Features
  • Suitable for ponds up to 5000 litres
  • Compact design
  • Easy to clean
  • Cost
Rating
8.6/10

More Detailed Pond Filter Box Reviews

Swell UK Pond Filter Box Premium Kit 45000

The Swell UK Pond Filter Box Premium Kit 45000 is the best pond filter box as it provides everything you need for your pond including a quality pond pump, UV clarifier and a filter box.

This pond filter box filters out all the debris that would normally settle at the bottom of your pond thus improving the clarity and quality of your pond water. The pump is efficient and economical to run. The filter contains multiple graded foam filters that keep your pond clear and healthy. The box also contains a UV light system which reduces green water and keeps the pond clear.

The pond filter box is suitable for ponds up to 45,000 litres without fish, 22500 litres with fish or 11250 litres with Koi. It has a flow rate of 10,000 litres per hour and comes with a 10-metre cable for easy installation. This pond filter box includes a 3-year guarantee on the pump and 1 year on the filter and UV. It also has a simple in-situ cleaning system that is easy and mess-free – you don’t even have to get your hands wet.

Overall, this is the best pond filter box with UV light as it has a very high flow rate, great filters and effective UV system.

Oase in-line filter BioSmart 36000

The Oase in-line filter BioSmart 36000 is suitable for ponds up to 3600 litres, is very effective and is easy to clean.

This pond filter box is suitable for ponds up to 36000 litres without fish. The box includes a range of foam filters that remove pond debris keeping your pond water clear and healthy. The flow-through filter also includes a pollutant level indicator and water temperature display. The filter works very effectively, and you can see a difference in water clarity in just a few days.

The filter is also easy to clean and contains an integrated sludge drain.

This filter box offers a reliable quality product that will make a real difference to your pond water quality and keep your fish healthy and happy.

All Pond Solutions Koi/Goldfish Pond Filter Box Full Kit, Small, 9 W

The All Pond Solutions Koi/Goldfish Pond Filter Box Full Kit is the ideal choice for smaller ponds as it includes everything you need including a UV steriliser.

This kit offers a great choice for ponds up to 6000 litres as it includes everything you need. It is also suitable for ponds up to 4500 litres with a mix of small fish. The kit includes a pond filter box, pump, UV and 20mm hosing and is quick and easy to set up ready to go.

The pond filter box has variety of filters including Japanese matting, fine foam and bio balls filter media. The unit also includes a thermometer and dirty filter indicator in the lid. The unit is easy to clean and has a waste drain for easy removal of waste during maintenance.

This is the best pond filter box setup for small ponds as the comprehensive kit includes a good quality filter, pump and a UV steriliser.

Fish Mate 2500 GUV Gravity UV Plus Bio Pond Filter

The Fish Mate 2500 GUV Gravity UV Plus Bio Pond Filter combines UV and biological filtration at a very reasonable price making it ideal for small ponds.

This pond filter is suitable for ponds up to 2500 litres and includes mechanical filtration, biological filtration and UV clarification. The filter does a great job and you should start to see a difference in your pond water in a couple of weeks. The filter uses a frost-proof quartz less UV chamber. The pond filter box features a hinged lid for easy cleaning. The pond filter comes with a 3-year guarantee.

This is a great filter for small ponds and is a good price for a filter with UV clarification.

Fish Mate 5000 GBIO Gravity Bio Pond Filter

The Fish Mate 5000 GBIO Gravity Bio Pond Filter is a simple, low-cost option to the problem of green and smelly ponds.

This filter is suitable for ponds up to 5000 litres. It includes a filter sponge for mechanical filtration as well as SUPRA+ bio media. The filter is easy to fit and clean. This is the ideal pond filter for small ponds as its compact size makes it easy to tuck away out of view. The pond filter comes with a 3-year guarantee.

This is a good low-cost pond filter for small ponds.

Pond Filter Box Buyer’s Guide

Pond size

The type of pond filter box you require will depend on the size of the pond as well as how many fish you have. Fish produce a lot of waste and this is why you need a larger filter if you have a well-stocked pond. For small ponds and features without fish then a smaller filter will be all that is required.

UV light

Many pond filter boxes include a UV light which kills algae and improves the clarity of your water. The dead algae clumps together and is then removed by the mechanical filters in your filter box. This clears your green murky, smell pond and makes the water clear and healthier for your fish.

Ease of maintenance

Pond pumps are usually easy to maintain. You will need to clean the mechanical features periodically. Some pond filters have handles that squeeze these sponges out for you, so you don’t get wet and messy. If you have not had a filter in your pond before you may have to clean the filters quite often as they work hard to clean the pond. Once the water is clear the filters will need cleaning far less often.

Pond pumps

Pond pumps run water through the filter, so you need a pump as well as a filter in your pond. Some products combine a pump and filter and some kits come with everything you need.

Guarantee

Pond filters often come with a guarantee which gives you extra peace of mind.

Conclusion

Pond filters help to keep your pond water clear and fresh. This makes you pond look and smell a lot nicer and also provides a healthier environment for fish. I think the Swell UK Pond Filter Box Premium Kit 45000 is the best pond filter box for large ponds with fish as it provides everything you need including a quality pond pump, UV clarifier and a filter box.