Evolution Aqua The Cetus Sieve

Remove large amounts of mechanical waste from your pond

100 % of 100

The Cetus Sieve from Evolution Aqua is an excellent pre-filter that can be both gravities and pump fed. Used with a pressurised filter, it will reduce backwashing and cut down the number of heavy solids - prolonging the life of your pond equipment.

A complete moulded unit, it boasts a flush-fitted 300 micron screen which retains large pieces of waste and debris. With a maximum flow rate of 18,000 litres per hour, it is perfect for use with large ponds and pools. It arrives ready to use, with flexible boots to connect to existing pipework.

The Cetus strains away large pieces of debris and waste, which means that a skimmer or bottom drain can take vast quantities of wastewater without maintenance. As the water then flows to a filter, such as the Evolution Aqua Nexus Eazy+, it reduces the work of these units, making them last longer and work more efficiently.

If the unit is pump fed, the sieve must be placed above pond water level, the expelled water is gravity dropped into the main filter. If gravity fed, the Cetus has a variable height inlet, thanks to the patented Pondflow regulation system. This unique feature works to allow differing water levels without causing the pump to be starved of water.

As the water is moved quickly through the sieve, oxygen enters the flow increasing vital levels and improving water quality.

Key Features:

  • Can be gravity OR pump fed.
  • Perfect fit screen so no waste can bypass.
  • Plug and Play
  • Reduces backwashing / maintenance of pressurised filters.
  • Robust one piece mould -no welded joints - no leaks!
  • Large waste collection area which slopes to sump outlet.
  • Ideal for mechanically filtering skimmer lines.
  • Patented float that gives constant flow for gravity-fed level fluctuations.
  • Tri-slot 300 micron wedge wire screen in 316L stainless steel on 100% of surface area
  • Increased levels of oxygen.
  • Pay back monthly at 0% APR with Klarna


Product Cetus Sieve
Max flow rate 18,000lph
Inlet and outlet - gravity fed 4" - 1.5"
Inlet and outlet- pump fed 1.5" - 3"
Dimensions 575 x 860 x 945mm
Guarantee 1 year
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