Swell Filter Box Premium Kit 25000

3 reviews

Swell Filter Box Premium Kit 25000 filter set is designed for ponds up to 25000ltrs, and provides everything you need for your pond - an excellent quality pond pump, UV clarifier and a filter box. Premium quality and an affordable price!


  • Filter Box Premium Kit 25000 10% OFF With Code
    code: SWLA0253 In Stock (10+ Available)

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Product Information

Our Swell Premium box filter kit 25000 is a large professional pond filter set up ideal for both koi and goldfish ponds. They are extremely effective flow-through gravity filters that incorporate unique filter foam media for efficient mechanical and biological filtration.

This large model is capable of filtering ponds up to 25,000 litres and is ideal for wildlife, community and Koi ponds. The kit includes an incorporated 18w UV Clarifier, located within the lid (for easy access) that will eradicate green water completely from your pond.

The filter kit comes complete with 10 foams in total, 5 course foams designed for catching larger debris and 5 fine for catching all but the tiniest debris particles. These foams are great for biological and mechanical use. For extra filtration this model comes complete with 2 media trays that can be filled with additional biological media such as Alfagrog, foams or even Carbon or Zeolite. Maintenance couldn't be any easier with its in-situ filter foam cleaning mechanism which allows you to squeeze the foams free of dirt without even getting your hands wet! The dirty water can then flushed out of the filter box with the sludge drain found at the bottom of the box.

The pump included requires minimal maintenance due to its large strainer cage that allows debris up to 12mm to be taken up to the filter box. It's also very efficient with its low 40w motor keeping fish keeping affordable. The pump comes complete with a hose-tail so you can use a variety of pipe sizes (25mm, 32mm & 38mm).

Key Features:

  • Complete with Swell Premium 5000 Filter Pump, 18w integrated UV clarifier, robust filter chamber with easy cleaning mechanism and all filter media.
  • Kit includes 3m of 32mm pipe & clips.
  • Biological and Mechanical Media.
  • Internal filter foam cleaning mechanism.
  • Re-usable Foams.
  • Recommended.

Pond Size
Max Flow Rate
Max Head Height
UV Bulb
Filter 25,000L (No Fish)
12,500L (With Fish)
6,250L (With Koi)
N/A N/A 18w PLS 32mm (included) 70mm (Not included)
Recommended - Oase Biotec
51 x 46 x 53cm UV Cable 4m 1 year
Pump N/A 5000 LPH 3.5m N/A 32mm (included) 70mm (Not included) 20 x 15 x 10cm 10m 3 year

Latest Customer Reviews

  • Rating
    Date 22/12/2021 19:12pm
    Swell Filter Box Premium Kit 25000
    Feefo Logo
    The service was rubbish not able to make any contact by phone
  • Rating
    Date 24/06/2021 07:06am
    Swell Filter Box Premium Kit 25000
    Feefo Logo
    seems to be working fine.
  • Rating
    Date 26/05/2021 08:05am
    Swell Filter Box Premium Kit 25000
    Feefo Logo
    Flimsy, cheaply made and as yet to show any results
  • Rating
    Date 28/05/2020 12:05pm
    Swell Filter Box Premium Kit 25000
    Feefo Logo
    It was out of stock ...
    Even though it said in stock on web page.
    And they took the money for it.
    Then two days later an email to say it was out of stock
  • Rating
    Date 04/05/2020 06:05am
    Swell Filter Box Premium Kit 25000
    Feefo Logo
    The equipment is great but the instructions could do with upgrading about removing the lamp. It just took me a bit longer check. Overall no real complaints and would recommend it to anybody