Evolution Aqua Surge Filter with UV – Pressurized Pond Filter for Ponds up to 1,320 Gallons
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Description
The Evolution Aqua Surge Filter with UV (SURGEFILUV18) is a compact, pump-fed pressurized pond filter for ponds up to 1,320 US gallons, featuring an integrated 18-watt UV clarifier and a bed of K+Media — Evolution Aqua’s proprietary biological and mechanical filter media. Unlike traditional sponge-based filters, the Surge Filter contains no sponges or foams: the K+Media moves freely as a moving bed, self-cleaning during operation and catching waste particles down to 1 micron. When it is time to clean, Evolution Aqua’s patented Air Clean Technology uses an air syphon to agitate the K+Media and flush waste through the bottom waste outlet — no mess, no hand contact with dirty media, hands stay dry. Included accessories: ball valves, stepped hosetails (3/4”, 1”, 1-1/4”), clear drain hose, and mounting brackets. Optimum pump: 660 GPH (max 925 GPH). Connection size: max 1-1/4”. 2-Year Manufacturer Guarantee.
Why Choose the Evolution Aqua Surge Filter?
- No sponges. No foams. Hands stay dry. Every traditional pressurized filter uses sponge or foam media that must be removed, squeezed, and rinsed — a messy process. The Surge Filter replaces all sponges and foams with K+Media. There is nothing to squeeze. Evolution Aqua’s patented Air Clean Technology cleans the K+Media automatically during the drain cycle, leaving your hands completely dry.
- K+Media — moving bed filtration to 1 micron: K+Media is Evolution Aqua’s independently tested proprietary filter media (certified by IFTS — Institut de la Filtration et des Techniques Séparatives). The media is isostatically moulded with minerals for accelerated beneficial bacteria maturation. K+Media moves freely within the filter as a moving bed, self-cleaning during operation and providing mechanical filtration to 1 micron. K+Media never needs replacing and improves over time.
- Patented Air Clean Technology — no moving parts: The Surge Filter’s cleaning system uses an air syphon design: when the pump stops and the waste valve opens, air is naturally drawn into the filter as it empties. The mixing of air and water causes the K+Media to move chaotically, dislodging trapped waste which exits via the bottom waste line. No mechanical backwash pump required. No reverse-flow valve. No moving parts means exceptional reliability and minimal maintenance.
- 18W integrated UV clarifier: The built-in 18-watt UV unit eliminates green water by targeting suspended algae cells. The UV is wired directly to the mains and operates independently from the pump — simple to maintain and connect.
- Compact pump-fed design — flexible placement: As a pressurized pump-fed filter, the Surge Filter can be placed at, below, or above the pond water level — anywhere your pump can push water to. Mounting brackets are included for secure wall or surface installation. The compact footprint fits tight spaces.
- Complete accessory kit included: Ball valves for operation and cleaning control; stepped hosetails for flexible hose connection (3/4”, 1”, 1-1/4”); clear drain hose for visual waste monitoring during cleaning; mounting brackets for secure installation.
How Air Clean Technology Works — Step by Step
- Turn off the pump. Water inflow to the filter stops.
- Close the ball valves on the inlet and outlet lines.
- Open the waste valve at the bottom of the filter.
- Air is automatically drawn in via the syphon as the filter drains downward. No air pump or compressor needed.
- Air and water mix inside the filter, causing the K+Media to move chaotically, scrubbing trapped waste particles off the media surface.
- Dirty water exits via the clear waste hose at the bottom — you can see the waste flowing out. Close the waste valve when water runs clear.
- Reopen the ball valves and restart the pump. Done. Hands stayed dry the entire time.
Technical Specifications
| Specification | Detail |
|---|---|
| SKU / MPN | SURGEFILUV18 |
| Pond Size (Max) | 1,320 US gallons |
| UV Clarifier | 18W integrated |
| Max Flow Rate | 925 US GPH |
| Optimum Flow Rate | 660 US GPH |
| Inlet / Outlet | Stepped hosetails: 3/4”, 1”, 1-1/4” (max 1-1/4” / 32mm) |
| Waste Port | 1” |
| K+Media Supplied | 4.5 litres |
| Water Volume in Filter | 5 US gallons (19 litres) |
| Filter Media | K+Media — moving bed, mineral-enriched, never needs replacing |
| Particle Capture | Down to 1 micron (IFTS independently tested) |
| Installation | Pump-fed upflow pressurized — flexible placement |
| Cleaning | Air Clean Technology (patented air syphon + ball valves — no sponges) |
| No Sponges / Foams | Yes — foam-free design |
| Moving Parts | None — virtually maintenance-free |
| Included | Ball valves, stepped hosetails (3/4”, 1”, 1-1/4”), clear drain hose, mounting brackets |
| GFCI | Required for UV mains connection |
| Warranty | 2-Year Manufacturer Guarantee |
Frequently Asked Questions
What is the maximum pond capacity for the Evolution Aqua Surge Filter?
The Surge Filter with UV (SURGEFILUV18) is rated for ponds up to 1,320 US gallons. It provides mechanical filtration (K+Media captures waste down to 1 micron), biological filtration (K+Media colonizes nitrifying bacteria), and UV clarification (18W UV eliminates green water algae) in a single compact unit.
Does this filter include a UV clarifier?
Yes. The Surge Filter features an integrated 18-watt UV clarifier that targets suspended algae cells, eliminating green water. The UV unit is built into the top of the filter housing and connects directly to a standard mains power supply (GFCI protection required). It is simple to wire and low-maintenance.
Why is K+Media better than traditional filter sponges or foams?
K+Media is Evolution Aqua’s proprietary filter media, independently tested and certified by IFTS (Institut de la Filtration et des Techniques Séparatives):
- Captures waste down to 1 micron — significantly finer than sponge or foam filtration.
- Moving bed design — K+Media moves freely within the filter, self-cleaning as it tumbles. This prevents the clogging that shortens sponge filter maintenance intervals.
- Never needs replacing — K+Media improves over time as beneficial bacteria populations mature. No ongoing media replacement cost.
- Isostatically moulded with minerals — accelerates beneficial bacteria colonization for faster filter maturation.
- No dirty sponge contact — the Air Clean Technology cleaning process keeps your hands dry.
How does the Air Clean Technology cleaning process work?
The Surge Filter uses Evolution Aqua’s patented Air Clean Technology — a unique air syphon system that cleans the K+Media without any sponge contact, reverse-flow pumping, or multi-port valves:
- Turn off the pump and close the inlet and outlet ball valves.
- Open the waste valve at the bottom of the filter.
- As the filter drains, air is naturally drawn in via syphon (no air pump needed).
- The air and water mixture causes the K+Media to move chaotically, dislodging trapped waste.
- Dirty water exits through the clear waste hose — you can see when it runs clear.
- Close the waste valve, reopen the ball valves, restart the pump. Done.
There are no moving parts in the cleaning system, no mess, and no need to open the filter canister.
What are the plumbing and installation requirements?
The Surge Filter connects via stepped hosetails — barbed fittings for flexible pond hose in 3/4”, 1”, and 1-1/4” sizes (maximum connection 1-1/4” / 32mm). Ball valves and all hosetail sizes are included.
The Surge Filter is a pump-fed upflow pressurized filter — water is pumped upward through the K+Media from the inlet at the bottom. Use a submersible pond pump rated 660 GPH (optimum) to 925 GPH (maximum). The included mounting brackets allow installation on walls or level surfaces. The filter can be placed at, above, or below pond water level.
What is the recommended pump flow rate for the Surge Filter?
Evolution Aqua recommends a pump flow rate of 660 GPH (optimum) to 925 GPH (maximum) for the SURGEFILUV18. The optimum flow of 660 GPH provides the ideal dwell time inside the filter for K+Media to achieve maximum mechanical and biological filtration. Running a pump above 925 GPH will push water through the media too quickly, reducing filtration effectiveness.
A pump rated around 660–800 GPH at your actual installation head height is ideal. Call (765) 508-4352 for help matching a pump to this filter.
Why Buy Evolution Aqua Products from Pond Pro Direct?
- Authentic Evolution Aqua products with 2-Year Manufacturer Guarantee
- Filtration expertise — call for help matching a pump to the Surge Filter and sizing for your pond
- Price Match on identical Evolution Aqua products from authorized retailers
Evolution Aqua Surge Filter with UV (SURGEFILUV18) — 18W UV | 1,320 US gal | 660 GPH optimum / 925 GPH max | 3/4"–1-1/4" hosetails | K+Media 4.5L (moving bed, never replace) | Air Clean Technology (no sponges) | ball valves + clear drain hose + mounting brackets included | 2-Year Guarantee. Pump-fed upflow. GFCI required.
Questions about pump selection or installation? Call or text (765) 508-4352 — Mon–Fri, 9 AM–5 PM EST.
Price Match
At Pond Pro Direct, we want you to shop with confidence, knowing you’re always getting a good deal.
We will match or beat the lowest online price on its products.
If you find a lower price for any products on our store, we will beat it by $50 for products listed over $2000. In order to be eligible, you must provide proof, whether a screenshot, invoice, email, etc. of the lower offer.
Please note that this does not apply to every product in the store, so reach out via email or chat for confirmation before purchasing.
For the policy to apply, simply send us a screenshot, link, or any other proof of the lower price.
For more information, please check out Price Match Policy Page
Shipping & Delivery
Order Processing
Orders are processed within 1–5 business days, depending on product type, brand, and fulfillment method. Products sold on Pond Pro Direct ship directly from manufacturers or authorized distribution partners and do not ship from a single centralized warehouse.
Processing times may vary by brand, item type, fulfillment method, and whether an item is made to order or ships via freight.
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Once your order is received, we contact the manufacturer or distribution partner to confirm availability and fulfillment timelines.
- If an item is unavailable or on backorder, we will notify you by email and void the pre-authorization.
- If the item is available, the payment will be processed and the order submitted for shipment.
Order Shipment
If your order is in stock and payment is processed, it will typically ship within 6–13 business days. Once your order ships, tracking information (when available) will be sent to the email address provided at checkout.
If you do not receive shipping confirmation within 6 business days, please contact us at support@pondprodirect.com.
Shipping Destinations
At this time, we primarily ship within the United States. Some products may be available for shipment to Canada. If the website allows checkout and accepts your shipping address, the product is eligible for delivery to that location.
Changing Your Shipping Address
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Shipping Times
All shipping times are estimates only and not guarantees.
- Typical handling time: 1–5 business days
- Typical transit time after shipment: 5–8 business days
- Estimated delivery window: 6–13 business days
Delivery timelines may vary based on brand, item type, production status, freight requirements, and carrier availability.
If an order is cancelled after it has been processed or shipped, the customer may be responsible for applicable shipping charges, freight fees, carrier return fees, and warehouse handling costs, where applicable.
Shipping Options
Available shipping options vary by product and location.
Our standard Curbside Delivery option is provided at no additional cost where applicable and delivers the item to the curbside or driveway of the delivery address.
Additional options, such as Threshold Delivery or White Glove Delivery, may be available for select products and locations.
For full details regarding freight delivery, inspection requirements, liftgate service, returns, and customer responsibilities, please review our full Shipping Policy page.
Returns & Refunds
Cancellations & Refunds
Orders may be canceled free of charge before shipment, unless the item is classified as Custom or Made-to-Order (see below).
If you have questions about your order, please contact us at support@pondprodirect.com or call (765) 508-4352 during business hours.
Cancellations (Before Order Ships)
If you need to cancel an order before it ships, please contact us as soon as possible. Orders canceled prior to shipment are eligible for a full refund.
You can reach our team by phone at (765) 508-4352, via live chat on our website, or by email at support@pondprodirect.com.
Cancellations (After Order Ships)
Once an order has shipped or entered fulfillment, it may no longer be eligible for cancellation. If you no longer wish to keep the item, you must wait until delivery and then request a return.
A Return Merchandise Authorization (RMA) is required before returning any item.
Custom or Made-to-Order Items
Custom or made-to-order products are produced specifically for your order and cannot be canceled or refunded once production has begun, except in cases of defect or error.
Product pages will clearly indicate when an item is custom or made-to-order. If you are unsure whether an item falls into this category, please contact us before placing your order.
Returns & Refunds
Returns are subject to the following conditions:
- Customers have 30 days from delivery to request a return, unless otherwise stated on the product page or by manufacturer policy
- Items must be unused, uninstalled, and in original packaging
- An RMA is required prior to returning any item
Because we ship products directly from manufacturers, return eligibility may vary by brand. If a manufacturer does not permit returns on a specific product, we may be unable to accept the return. Please contact us if you would like confirmation of return eligibility for a specific item.
Fees & Shipping Costs
- Return shipping costs are the responsibility of the customer unless the item is defective or shipped in error
- Freight / LTL shipments may incur higher return shipping costs due to carrier fees
- Approved returns of non-defective items may be subject to a restocking fee of up to 25%
- Original outbound shipping charges are non-refundable
If you are exchanging an item rather than returning it outright, we may be able to assist with some costs depending on the product and manufacturer.
For full details, including freight deliveries, damage reporting requirements, and manufacturer-specific terms, please review our complete Return and Refund Policy
