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

Evolution Aqua Cetus Sieve

  • $641.57
  • RRP $695.05
Item in Stock | Usually dispatched within 24 hours

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*
  • Can be used in either gravity or Pump Fed installations
  • Patented Pond flow regulation system - constant flow allowing for gravity fed water level fluctuations
  • 300 micron sieve
  • Perfect fit screen so no waste can bypass
  • Easy maintenance
  • Reduced back washing of pressurised filters
  • Large waste collection which is easy to clean
  • No leaks - robust one piece mould with no welded joints
  • Plug and Play - comes with flexible boots to connect to pipe work

The Cetus Sieve is a self-adjusting sieve which can be installed in either gravity fed or pump fed installations. The Cetus Sieve enables pond water to be filtered of large amounts of waste and debris before the water enters your current filter system. This process is commonly referred to as “pre-filtering”. The Cetus Sieve can also be used as a stand-alone unit to remove leaves and other floating debris from your pond via a surface skimmer. The Cetus Sieve will efficiently and effectively remove large amounts of mechanical waste from your pond.

The Cetus Sieve is compatible with all filtration systems, however it is the perfect pre-filter for the Evolution Aqua Nexus filter range. For gravity fed systems the Cetus Sieve has a weir which will automatically adjust to the flow rate of your pump (Max flow rate 18,000 lph). When the Cetus Sieve is used in front of any other biological/mechanical filter the period in between cleaning will be extended. The biological process is improved by the removal of organic matter which would consume oxygen and leach ammonia and other compounds into the water.

The Cetus sieve is a bow screen pre-filter, suitable for pre-filtration of any biological filter including all pressured filters. It is advised that all pressurised filters be pre-filtered using a Cetus to reduce excessive backwashing and maintenance due to heavy solids.

Installing the Cetus Sieve
The Cetus Sieve has a variable inlet height using the unique patented Pondflow regulation system – for use when gravity fed. This allows water levels within the pond to drop without causing the circulating pump to be starved of water. The Cetus will allow a skimmer or a bottom drain to accept vast amounts of waste without excessive cleaning needed to be carried out. The water must then be pumped to a either a normal filter above pond level or a pressurised filter prior to its return to the pond. Alternatively the Cetus can be placed in line with a Nexus filter through the use of an additional pump and balancing pipe set-up.

If pump fed, the sieve is placed above pond water level and then the exit water is gravity returned back into your main filter or pond. Alternatively an additional pump and balancing pipe can be used to allow the Cetus to be installed in-line with a Nexus filter system.

Showing our 2 Evolution Aqua Cetus Sieve reviews with an average rating of Excellent. Would you like to write a review?
Review Summary - 5 out of 5 based on 2 ratings.
September 21, 2018 | Kevin Cooke
Cetus Sieve

Excellent does what it says on the and cheaper than going to my local aquatic outlet

September 21, 2018 | Kevin Cooke
Cetus Sieve

Excellent does what it says on the and cheaper than going to my local aquatic outlet

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