Free delivery on all orders over £49•
Sale now on - check out our deals here ›
Pond Points Loyalty Scheme

Oase BioSmart 18000 Pond Filter

Code: 56776
  • $213.83
  • RRP $324.01
Item in Stock | Usually dispatched within 24 hours
Order within for delivery Monday 27th September with Express Delivery

Why buy from Pond Planet?

14 day returns On all our items
100% Secure Shop in confidence
Excellent Value Amazing prices!
Free delivery on orders over £49*
  • Suitable for ponds up to 18m³
  • Additional oxygen enrichment through special water channelling
  • Cleaning handles for convenient, easy maintenance
  • Filter can be buried up to a third of its height
  • Healthy pond climate thanks to oxygen-rich water
  • Special filter foams for highly effective nitrification and de-nitrification
  • Overflow indicator shows when maintenance is required
  • Clean via the sludge drain by simply pulling the integrated slide valve
  • Pollution indicator and thermometer for monitoring the water temperature
  • Supplemental connection for introducing aeration through external air pump
  • Long service life thanks to high-quality materials and functional design

The classic Oase Biotec 5.1 Pond Filter returns in the form of the Oase BioSmart 18000. The Oase BioSmart 18000 is an ideal entry level, flow through filter, suitable for ponds up to a maximum volume of 18000 litres without fish.

The foam filters effectively remove pond debris and break down toxic chemicals resulting in clear healthy water when used in conjunction with a UVC; such as the Oase Vitronic or Bitron C range of UVC's which are ideal for use with the BioSmart 18000 Pond Filter.

The BioSmart flow-through filter is packed full of innovative features including a pollutant level indicator, water temperature display, easy cleaning handles and an integrated sludge drain for easy convenient maintenance.

The filters clever design provides a high level of oxygen enrichment and a large water flow-through rate. The different filter foams offer the necessary volume and a large surface area for optimal development of the filter biology.

Pond Filter Specifications
Dimensions (L x W x H)382 x 555 x 408 mm
No. Of Foams4
No. Of Blue Foams2
No. Of Red Foams1
No. Of Green Foams1
Inlet Connection25/32/38 mm
Outlet ConnectionDN 75
Waste Discharge ConnectionDN 50
Max. Flow Rate5500 lph
Max. Pond Size18 m³
Max. Pond Size with Fish Stock9 m³
Max. Pond Size with Koi4.5 m³
Guarantee3 Years
Showing 2 of our total 3 reviews, with an average rating of 5 stars. Read all 3 reviews for Oase BioSmart 18000 Pond Filter.
Write a review ›
Review Summary - 5 out of 5 based on 3 ratings.
May 9, 2021 | Anonymous
BioSmart 18000 Pond Filter

As Above

July 8, 2020 | Sharon McGrouther
BioSmart 18000 Pond Filter

Excellent service. Extremely quick dispatch and delivery. Very big and should do the job. Will wait and see how it goes keeping the water clear.

UK Delivery

Order before 2:00pm for same day dispatch.

Orders under £49

Standard Delivery Service - £3.95
Delivery takes 1-2 working days.

UK Express Delivery - £5.95
Upgrade your order to next working day delivery.

Orders Over £49

UK Express Delivery - FREE!
FREE next working day courier delivery via DPD Local.


Click Here For Full Terms & Conditions


If for any reason you are not satisfied with your purchase from Pond Planet, you may return the product(s) to us within 14 days of the purchase date for a refund or exchange.

Goods must be returned in perfect and unused condition, in their original packaging. The buyer must ensures that the goods are securely and adequately packed to avoid damage and the purchaser pays all postage costs. We recommend that products are returned by recorded delivery or by carrier that requires a signature. Pond Planet accepts no responsibility for goods returned to us unless signed proof can be provided.


Click Here For Full Terms & Conditions


You can use any of the payment types listed at the bottom of the page to pay for your order. Your details are safe with us as we take security very seriously indeed.

We also take fraud very seriously so all credit and debit card transactions are subject to validation, authorisation and security checks by both the card issuer and ourselves.

Please note - We DON'T store your credit card details on line.


We are committed to protecting your privacy. We will only use the information that we collect about you lawfully (in accordance with the Data Protection Act 1998) and inline with our Privacy Policy. 

We collect information about you for two reasons: firstly, to process your order and second, to provide you with the best possible service.

We will not email you in the future unless you have given your consent and will give you the chance to refuse any marketing email from thereafter.


Click Here For Our Full Privacy Policy