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Blagdon Midipond Filter 20000 with 18w UVC

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Quick Overview

Availability: Order now for dispatch on Tuesday 14th July

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The MidiPond 20000 is a popular box pond filter that features a 7 stage filtration system. It is suitable for ponds up to 20000L without fish. See the size chart below based to determine suitability based on your pond setup. It features a UV light to help kill green water algae, a hinged lid for easy cleaning and multi stage media for optimum water clearning.

Filtering stage overview:

Spray bar oxygenates water creating the ideal environment for friendly bacteria. Graded foam filter pads remove dirt and waste. Ceramic biological filter media prevents the build up of harmful toxins in the pond. Replaceable polymer wool pads removes fine waste particles and polishes the water. Carbon impregnated pad removes chemical pollutants.


  • Comes with 18w UV bulb.
  • Low maintenance and easy to clean.
  • Spray bar oxygenates water creating the ideal environment for friendly bacteria.
  • Seven stage filter design.
  • Bio-media and polymer carbon cartridge.
  • Hinged lid allows easy access for cleaning.
  • Flow rate: 5000 Lph
  • Max pond size (without fish): 20000L

Recommended Hose sizes:

  • Filter inlet hose from pump: 32mm / 1.25"
  • Filter outlet hose to pump: 3 x 40mm / 1.5"

Pond Capacity Guide:

Over 75cm deep without fish in shade Over 75cm deep with fish in shade Under 75cm deep with fish in shade Over 75cm deep with fish in full sun Under 75cm deep with fish in full sun Under 75cm deep with koi in full sun
20000 ltrs / 4399 gal 10000 ltrs / 2200 gal 7500 ltrs / 1650 gal 7500 ltrs / 1650 gal 5625 ltrs / 1237 gal 2810 ltrs / 618 gal

Additional Information

Brand Blagdon
Barcode 5015368010559
Flow Rate (lph) 5000

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Postage Information

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Orders over £30 are Delivered FREE!

Providing none of the items in your order require pallet delivery or are excluded from delivery promotions, we will give you free standard delivery. You can still upgrade this service if you wish, and will only pay the difference.


Pallet Deliveries are different.

For items that have to be sent by insured pallet or other special delivery, these are excluded from the standard delivery offer and instead follow a different system. Pallet deliveries are split into 2 tiers: tier 1 and tier 2. Pallet deliveries take 2-4 working days and cannot be tracked.


For pallet deliveries we will contact you to confirm the delivery address and delivery day before releasing the order.


Please note that the pallet delivery service is a drop at kerb only service, the drivers are not insured to handle goods into homes and you are required to dispose of the pallet.


Pallet Tier 1

This tier is for solo tanks and cabinets, or other solo high weight products that we can't send by a normal courier. We subsidies the majority of the true delivery cost for these items to offer the best value we can. The shipping cost for these is calculated at checkout.


Pallet Tier 2

New for 2020! We are proud to announce we now offer FREE mainland UK pallet deliveries for Pallet Tier 2. Pallet Tier 2 is for the larger full tank and cabinet sets, such as the beautiful Juwel Rio, Lido, Trigon and Vision ranges.

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