
Evolution Aqua Surge Filter + UV (18w)
The Evolution Surge Filter + UV is new for 2024 but uses the proven design of the Evolution Aqua Tempest, K+Media and the newly patented Air Technology cleaning and is an easy to install compact filter for ponds of up to 5000 litres.
How does the Serge Filter + UV work? When the flow of water from your pump moves through the water chamber which contains K+ filtration media for friendly bacteria, it pushes the K+ media against a retaining plate creating a mechanical barrier, this clumps the media together and helps it to filters out waste particle. With every circulation through the unit the water passes over the 18w UV lamp which flocculates (clumps) green water algae together making them easier to catch withing the filtration media.
When the filter needs cleaning, you simply switch off the pump, close the inlet and outlet ball valves and open the waste valve, as you do so air rushes up to the body chamber creating turbulence which agitates and cleans the waste from the K+ media and the dirty water exits through the waste valve, making it a very quick and easy cleaning process. The Surge Filter + UV is supplied with the inlet and outlet hosetails (to suit 20mm, 25mm, 32mm hose), valves, 18w UV, waste assembly, 2 mounting brackets, 500mm of clear waste 25mm hose and an elbow for the waste connection. For the filter to work it does need to be mounted vertically with the inlet at the bottom and outlet at the top. The Surge is supplied with a 2 year guarantee.
Evolution Surge Filter + UV Features
• Combined Filter for Goldfish and Koi ponds upto 5000 litres
• Filter includes integrated 18w UVC
• Amazingly simple cleaning with no sludge build-up
• 2 year guarantee

The Evolution Surge Filter + UV is new for 2024 but uses the proven design of the Evolution Aqua Tempest, K+Media and the newly patented Air Technology cleaning and is an easy to install compact filter for ponds of up to 5000 litres.
How does the Serge Filter + UV work? When the flow of water from your pump moves through the water chamber which contains K+ filtration media for friendly bacteria, it pushes the K+ media against a retaining plate creating a mechanical barrier, this clumps the media together and helps it to filters out waste particle. With every circulation through the unit the water passes over the 18w UV lamp which flocculates (clumps) green water algae together making them easier to catch withing the filtration media.
When the filter needs cleaning, you simply switch off the pump, close the inlet and outlet ball valves and open the waste valve, as you do so air rushes up to the body chamber creating turbulence which agitates and cleans the waste from the K+ media and the dirty water exits through the waste valve, making it a very quick and easy cleaning process. The Surge Filter + UV is supplied with the inlet and outlet hosetails (to suit 20mm, 25mm, 32mm hose), valves, 18w UV, waste assembly, 2 mounting brackets, 500mm of clear waste 25mm hose and an elbow for the waste connection. For the filter to work it does need to be mounted vertically with the inlet at the bottom and outlet at the top. The Surge is supplied with a 2 year guarantee.
Evolution Surge Filter + UV Features
• Combined Filter for Goldfish and Koi ponds upto 5000 litres
• Filter includes integrated 18w UVC
• Amazingly simple cleaning with no sludge build-up
• 2 year guarantee

Use the table below to select the correctly sized item. If you have any difficulties deciding which size is right for you, contact us by email or phone and we will be very happy to assist you.
| Pond Volume Litres (Gallons) | 5000 (1100) |
| Suggested System | Surge Filer + UV |
| Included UV | 18w |
| Suggested Inlet and Outlet Sizemm (inch) | 20mm (¼"), 25mm (1") , 32mm (1¼") |
| Waste Size mm (inc | 25mm (1”) |
| Maximum Dimensions - H x W x D mm (including fitted hosetails) |
925 x 450 x 218 |
| Maximum Flowrate LPH (GPH) | 3500 (770) |
| Optimum Flowrate LPH (GPH) | 2500 (550) |
| K+Media Installed | 4.5 Litres |
Ask a question
If you need to ask a question about Evolution Aqua Surge Filter + UV (18w) you can do so here.
This product is delivered from stock to mainland UK delivery areas using a Free Next Working Day Delivery Service*. When checking out you can also upgrade to a Saturday Delivery Service*.
This product can also be dispatched to non UK mainland addresses, please see the table for delivery times and charges.
*We have a 2 pm weekday cut-off for Next Working Day and Saturdays Deliveries and do not dispatch on weekends or bank holidays.
| Pallet Delivery Details | |
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Mainland UK Areas - Next Working Day FREE
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| Unfortunately Next Delivery is only available to Mainland UK Addresses, delivery to others addresses are as detailed below. | |
Scotland Highlands - 5 -7 Days
AB36 - AB38, AB55 - AB56, FK17 - FK21, IV1 - IV39, IV52 - IV54, IV63, KW1 - KW14, PA21 - PA40, PH19 - PH26, PH30 - PH41, PH49 - PH50 £24.99 |
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Scotland Islands - 5 -7 Days
HS1 - HS9, IV40 - IV51, IV55 - 56, KA27 - KA28, KW15 - 17, PA20, PA41 - PA49, PA60 - PA78, PH42 - PH44, ZE1 - ZE3 £44.99 |
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Northern Ireland - 5 -7 Days £24.99
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Isle Of Man - 5 -7 Days £44.99
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Isle Of Wight - 5 -7 Days £17.99
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| Jersey* - 5 -8 Days £37.49* | |
Guernsey* - 5 -7 Days £37.49*
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* Jersey and Guernsey prices do not include vat.
Full delivery information and conditions can be found on our Delivery Information page.
IMPORTANT - NON Mainland UK Delivery Customers
Please note that once your consignment has been dispatched it can not be cancelled. If upon delivery or for anytime thereafter you wish to return the product the cost of return is the responsibility of the customer. Should a product be found to be faulty on delivery or during the guarantee period, please contact us immediately so we can arrange for replacememt parts to be sent if required. Full detail on our returns policy.