Laguna Pressure-Flo Pond Filter with UVC Steriliser

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Laguna Pressure-Flo Pond Filter with UVC Steriliser
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  • The Pressure-Flo 4000 Includes a UV and is suitable for up to 2000L
  • The Pressure-Flo 7500 Includes a UV and is suitable for up to 3500L with gold fish
  • The Pressure-Flo 13500 Includes a UV and is suitable for up to 7000L with gold fish
  • The Pressure-Flo 17000 Includes a UV and is suitable for up to 8500L with gold fish
  • The Pressure-Flo 21000 Includes a UV and is suitable for up to 10500L with gold fish
  • High preformace filter ideal for small to medium sized garden ponds
  • Ideal pairing with the Laguna Max-Flo
  • This product comes with a 5-year warranty.

The Pressure-Flo pressurised pond filter provides important water filtration functions that are essential for everyday pond maintenance: mechanical and biological filtration, as well as UVC sterilization.

The Laguna Pressure-Flo has a wide range of benefits resulting in a top quality product that helps pondkeepers enjoy the hobby. These benefits include a unique water vortex filtering process, mechanical filtration to remove small particles, BioRock for biological filtering and a UV bulb to remove evidence of green water. With this highly effective unique vortex filtering method pushes water down and through the filter sponge trapping all the small particles, this vortex process does however allow for a build up of particles on the outside of the sponges. Laguna have developed a user friendly back wash system that reverses the vortex and uses two internal blades that clean the sponges, this waste water can then be used as a natural fertilised water packed with nutrients that will help your surrounding garden grow. The filter comes equipped with a cleaning indicator that takes the guess work out of maintenance intervals.

Pressure-Flo is designed to work in tandem with a solids handling pump, ideally a Laguna Max-Flo waterfall and filter pump. With the filter connected to the pump, water enters the unit through a water inlet. It then passes through the mechanical filtration stage, consisting of highly durable foam filters that intercept and trap dirt and debris.

Next, water enters a biological filtration chamber where it comes into contact with BioRock biological filter media which remove ammonia, and harbour beneficial bacteria keeping the water healthy for plants and fish. Dirt-free water then passes along an integrated UV-C lamp, where it is exposed to ultraviolet rays that inhibit the growth of algae. Water finally returns to the pond thoroughly cleansed. This patented system is the only one of its kind. Backwash cleaning can easily and comfortably be completed in a few minutes without opening the lid. This feature ensures that the filter performs at optimal levels for many days and prolongs the time between full maintenance sessions. An easy-to-view cleaning indicator signals when it's time to perform backwash cleaning.

  4000 7500 13500 17500 21000
Ideal Pump (not included) Max-Flo 2200 Max-Flo 5000 Max-Flo 7600 Max-Flo 9000 Max-Flo 21000
UVC power 13w 13w 24w 24w 36W
Flow rate 4000L/H 7500L/H 13500L/H 17500L/H 21000L/H
Suitable for ponds up to max. 4000L 7500L 13500L 17500L 21000L
Suitable for ponds with fish stock 2000L 3750L 6750L 8700L 10500L
Suitable for ponds with koi N/A N/A N/A 4200L 5300L

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Delivery costs for your order will be calculated during the checkout process based on your delivery address and the contents of your basket. You will only pay one delivery charge for your order. Express delivery is FREE for online orders OVER £39 unless any of the points below become a factor.

  • Some large items like aquariums, ponds and pond liners will have an additional charge of £45.00 to help offset the cost of a pallet delivery.
  • Orders containing a physical gift card will have an additional charge of £2.45 to cover the cost of materials and delivery (digital gift cards are a free alternative).
  • Orders to highlands, islands and Northern Ireland may incur an additional delivery charge displayed at checkout this is based on the postal code provided. DPD provides a list of postal codes which have additional surcharges. Some of these post codes may also take 2 working days to arrive, even on express. Pallet deliveries cannot be sent to these post codes.

We only ship to the UK and cannot ship internationally.

We aim to dispatch items that are currently in stock on the same working day if they are ordered before 2.45 pm (excluding Bank Holidays). Orders after 3pm will be dispatched the following working day, unless it fits any of the below criteria:

  • Orders containing live plants will take up to 2 weeks to arrive. We take a week's worth of customer orders and then inform the plant farms of the specific quantities we need to fulfil that week's order to avoid wastage.
  • Pallet orders containing large items like big aquariums will take additional time to arrive as they are sent by a third party. These orders will NOT be dispatched until we have been in touch to arrange a delivery date, this is to ensure someone is available at your address to sign for the delivery. Deliveries will generally be delivered ‘curb side’ within the terms of the agreement we have with our couriers so you will need to make arrangements to transfer larger items into your home yourself. Unfortunately, our drivers are not insured to transfer the aquarium into your home.
  • Physical gift cards and items from the gift shop (such as clothes, towels etc) are sent with 1st Class Royal Mail. Delivery usually takes 1-2 working days, though in rare cases and orders placed closer to public holidays (Christmas, Father’s day, Mother’s day etc.) may be longer.


If you are not 100% satisfied with your purchase online from our website, you can return the product and get a full refund or exchange the product for another one, for up to 21 days from the date you purchased it.

We strongly suggest signing up for an account with as this will allow for some additional returns options like return to your local store.

If you checkout as a guest you will need to return the product to Maidenhead Aquatics, PO Box 619, Egham, Surrey, TW20 2BS, please package the order (along with a packing slip or a note including your name, address and order number).

Large pallet items like aquariums are deemed delivered successfully with no damage once the the driver has left the property. If a report of damage is submitted after the driver has left we may be unable to assist with replacements. We recommend refusing a damaged delivery, this is the fastest resolution.

Our full terms and conditions can be found here. When you place an order with us online you are agreeing to these terms and conditions.

For delivery before Christmas, orders must be placed on or before 3pm on Wednesday 20th December. We cannot guarantee delivery of these orders pre-Christmas as we are reliant on our couriers, but will use our best endeavours to get orders placed on this date out to you before Christmas. For full details of our festive delivery and opening times click here

Please note: online orders placed after 3pm on Friday 22nd December will not be dispatched until the New Year. For full details of our festive delivery and opening times click here