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https://www.swelluk.com:443/swell-filter-box-premium-uv-45000-no-pump/ 
Swell Filter Box Premium UV 45000 (no pump)
The Swell Filter Box Premium UV 45000 is of fantastic quality and value, and sure to give you a clear and healthy pond. They are extremely effective flow-through gravity filters that incorporate unique filter foam media for efficient mechanical and biological filtration. Each filter box features an UV clarifying lamp to help rid water algae and harmful bacteria.
Product Information
The Swell Filter Box Premium UV is durable, made from the highest quality materials and simple to install and maintain. This extra large model is capable of filtering large ponds up to 45,000 litres and is ideal for wildlife, community and Koi ponds. The kit includes a large UVC of 36w that can be found within the lid (for easy access) that will eradicate green water completely from your pond. Checking the UV light couldn't be any easier with its UV spy hole.
The filter kit comes complete with a massive 20 foams in total, 10 course foams designed for larger debris and 10 fine for small debris particles to ensure a clear pond. These foams are great for biological and mechanical use but for extra filtration this model comes complete with 4 media trays that can be filled with additional 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 be flushed out of the filter box with the 2 sludge drains found at the bottom of the box.
Key Features:
- Low energy usage.
- Biological and Mechanical Media.
- Internal filter foam cleaning mechanism.
- Re-usable Foams.
- Recommended.
Recommended pump size: 10000lph for 45000 unit.
Also available in 25000 size.
| Product | Pond Size | UVC | Max Flow Rate | Main Outlet | Dimensions | Guarantee |
| Filter Box Premium UV 45000 | 45,000L (No Fish) 22,500L (With Fish) 11,250L (With Koi) | 36w | 10,000 lph | 70mm | 836 x 515 x 542mm | 2 Year |