Oase FiltoClear 5200 3rd Gen Pressure Filter – Pond Filter with UV Clarifier for Ponds up to 5,200 Gallons
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Description
The Oase FiltoClear 5200 3rd Generation Pressure Filter (SKU 91670) is an all-in-one pressurized pond filtration system combining mechanical filtration, biological filtration, and a 42W UV clarifier in a single compact unit rated for ponds up to 5,200 gallons (2,600 gallons with goldfish; 1,300 gallons with koi). The Gen 3 design introduces three densities of replaceable filter foams with improved plates and supports, a patented UVC Cleaning Rotor that keeps the quartz glass clear for optimal UV transmission, and bypass technology that maintains water flow even when media is partially blocked. The Easy-Clean 2-way Valve backflushes the filter and redirects waste without opening the lid or removing the cover. Pressurized construction allows installation above or below pond level; the impact-resistant housing can be buried to the clamping ring and concealed with an optional Oase FiltoCap cover. Includes 1.5” and 2” metric step fittings plus Sch40 adapters. 2-Year Limited Warranty. Not for submersion, swimming pools, or salt water. Do not pair with pumps exceeding 17’ of head pressure.
Why Choose the FiltoClear 5200 Gen 3?
- 42W UVC clarifier built-in — eliminates green water: The integrated 42-watt UV clarifier clumps single-cell algae so the mechanical filter media can capture it, producing consistently clear water without a separate UV unit.
- Patented UVC Cleaning Rotor: Automatically cleans the quartz glass sleeve that houses the UV lamp, maintaining peak UV transmission without manual intervention. Unique to Oase FiltoClear.
- Bypass technology — no more clogged-pump risk: If the filter media becomes partially blocked, the newly developed bypass maintains constant water flow through the system, preventing back-pressure that could damage the pump motor.
- Gen 3 three-density foam system: Three different foam densities, new plates, and extra supports provide progressive mechanical and biological filtration — coarse debris is captured first, fine particles further in, with maximum biological surface area throughout.
- Easy-Clean backwash — hands stay dry: Rotate the 2-way valve to the waste position and pull the integrated cleaning handle. The foams compress and flush debris through the waste line in minutes — no disassembly, no mess.
- Pressurized — install anywhere: Unlike gravity-fed filters, the FiltoClear 5200 can be located above, below, or at the same level as the pond. Burial to the clamping ring puts it completely out of sight.
- UV lamp and performance monitoring without opening filter: The external indicator window lets you monitor UV lamp output, filter performance, and pollutant levels — and replace the lamp (SKU 91649) — without shutting down the pump or opening the housing.
Technical Specifications
| Specification | Detail |
|---|---|
| SKU | 91670 |
| Generation | 3rd Generation (Gen 3) |
| UV Clarifier | 42W UVC (cULus Listed) |
| Replacement UV Lamp | SKU 91649 (42W — Gen 3 specific; replace annually) |
| Replacement Foam Set | SKU 91647 (Gen 3 specific — does not fit earlier FiltoClear generations) |
| Max Flow Rate | 3,450 GPH |
| Max Output Pressure | 2.9 psi / 7 ft of head |
| Max Pump Input Pressure | 7.25 psi / 17 ft of head — do not exceed |
| Voltage | 120V |
| Wattage | 42W |
| Cord Length | 16 ft |
| Connections | 1.5” and 2” (metric step fittings + 1.5”/2” Sch40 adapters included) |
| Filtration | Mechanical + Biological + UV (UVC clarification) |
| Filter Media | 3 densities of replaceable filter foams + plates + supports |
| Pond Volume | Up to 5,200 gal (decorative) / 2,600 gal (goldfish) / 1,300 gal (koi) |
| Dimensions | 15”L × 15”W × 24”H |
| Installation | Above or below water level (pressurized); buried to clamping ring; concealed with FiltoCap (sold separately) |
| NOT Approved For | Submersion • Swimming pools • Salt water • Pumps >17’ head pressure |
| Includes | 3 densities of filter foams, 42W UVC lamp, metric step fittings, 1.5”/2” Sch40 adapters |
| Warranty | 2-Year Limited |
FiltoClear Gen 3 Family — Choose by Pond Size
All Gen 3 FiltoClear models share: 3-density foam system, UVC Cleaning Rotor, bypass technology, Easy-Clean backwash, pressurized housing (buried to clamping ring), FiltoCap compatible, 120V, 16 ft cord, 2-year limited warranty.
| Model | SKU | UV | Max Flow | Dimensions | Decorative / Goldfish / Koi |
|---|---|---|---|---|---|
| FiltoClear 3400 | 91669 | 24W | 2,400 GPH | 15"×15"×19¼"H | 3,400 / 1,700 / 850 gal |
| FiltoClear 5200 (this) | 91670 | 42W | 3,450 GPH | 15"×15"×24"H | 5,200 / 2,600 / 1,300 gal |
| FiltoClear 8200 | 91671 | 60W | 4,500 GPH | 15"×15"×28¾"H | 8,200 / 4,100 / 2,050 gal |
Recommended Pump Pairings
The FiltoClear 5200 performs best with a pump delivering 2,300–3,200 GPH and no more than 17’ of head pressure. Do not use high-pressure waterfall pumps with this filter.
- Oase AquaMax Eco Classic 2700 — ideal entry-level pairing for ponds up to 2,700 GPH
- Oase AquaMax Eco Premium 3500 (SKU 87582) — premium pairing; synchronous electronic motor; qualifies for Clear Water Guarantee when combined with this filter
Frequently Asked Questions
What is the maximum pond capacity for the FiltoClear 5200?
The Oase FiltoClear 5200 Gen 3 (SKU 91670) is rated for 5,200 gallons in decorative ponds with no fish. For ponds with goldfish, it handles up to 2,600 gallons. For koi ponds, it is rated for up to 1,300 gallons to ensure sufficient UV exposure time and biological filtration capacity for the higher waste load.
If your koi pond exceeds 1,300 gallons, consider the FiltoClear 8200 (SKU 91671), rated for up to 2,050 gallons with koi.
How does the Gen 3 Easy-Clean technology work?
Cleaning is completed in minutes without opening the filter or touching the media:
- Rotate the 2-way valve to the waste position
- Pull the integrated cleaning handle
- The three foam densities compress, flushing accumulated debris out through the waste line
- Return the valve to the normal position — done
Your hands stay dry, the beneficial bacteria colony in the foams remains intact, and the pump never needs to be shut off for routine backwashing.
What pump flow rate is recommended for this filter?
This filter performs best with a pump delivering 2,300–3,200 GPH. We recommend the Oase AquaMax Eco Classic 2700 or the Oase AquaMax Eco Premium 3500 (SKU 87582).
The FiltoClear 5200 has a maximum pump input pressure of 7.25 psi (17’ of head). Do not connect high-pressure waterfall pumps — exceeding this input pressure can damage the housing and void the warranty.
Because it is a pressurized filter, the filter can be positioned below, at, or above pond level, and the return line can power a waterfall located above the filter exit point (up to 7’ of head on the output side).
Can I replace the UV bulb while the filter is running?
Yes. The Gen 3 FiltoClear allows UV lamp replacement through the external access without shutting down the pump — keeping the beneficial bacteria colony oxygenated during maintenance.
The FiltoClear 5200 (91670) uses a 42W UV lamp. The correct replacement is SKU 91649 (42W — Gen 3 specific). This part fits only the 2023+ Generation 3 FiltoClear 5200 and is not compatible with earlier FiltoClear generations.
Replace the UV lamp annually — UV lamp output degrades significantly after 8,000–9,000 hours even if the lamp remains lit.
Can the FiltoClear 5200 be buried in the ground?
Yes — the impact-resistant housing is specifically designed for partial burial up to the clamping ring. This conceals the filter body below ground while leaving the lid, controls, and indicator window accessible above ground.
To completely disguise the visible lid and controls, use an Oase FiltoCap faux-stone cover (sold separately) that blends naturally into landscaping.
Do not fully submerge the FiltoClear 5200 — it is a pressure filter, not a submersible. The lid and electrical components must remain above water at all times.
What is the UVC Cleaning Rotor and why does it matter?
The patented UVC Cleaning Rotor is a mechanical wiper built into the UV chamber that automatically keeps the quartz glass sleeve clean. As water passes through the UV section, mineral deposits, biofilm, and debris can coat the quartz glass and block UV light from reaching the water — even a thin film dramatically reduces germicidal effectiveness.
Oase’s Cleaning Rotor eliminates this problem by continuously wiping the glass clean, ensuring peak UV output throughout the lamp’s service life without manual intervention. This is a unique feature not found in most pressure filter UV systems.
Why Buy Oase Products from Pond Pro Direct?
- Authentic Oase products with full 2-year warranty coverage and parts availability
- System design expertise — call for pump pairing, Clear Water Guarantee configurations, and FiltoClear sizing guidance
- Price Match on identical products from authorized Oase retailers
Oase FiltoClear 5200 Gen 3 (SKU 91670) — 42W UV | 3,450 GPH max | 5,200/2,600/1,300 gal | 15"×15"×24"H | 16 ft cord | 1.5"&2" connections | Easy-Clean backwash | UVC Cleaning Rotor | bypass technology | buried to clamping ring | FiltoCap compatible | 2-year warranty. Not for submersion, pools, salt water, or pumps >17' head. Replace UV lamp annually (SKU 91649).
Questions about sizing, pump pairing, or FiltoClear family selection? Call or text (765) 508-4352 — Monday through Friday, 9 AM to 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.
Order Confirmation
After placing your order, you will receive an order confirmation email confirming that we have received your order and pre-authorized your payment method.
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
Address changes after an order has been processed or shipped may result in delays or additional carrier fees. Any carrier charges associated with address changes are the responsibility of the customer.
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
