Evolution Aqua Cetus Sieve Pre-Filter

Evolution Aqua


The Cetus sieve is a totally new, bow screen pre-filter, made using the latest rotational molding technology. The Cetus sieve is a bow screen pre-filter, suitable for pre-filtration of any biological filter, including all pressure filters. It is advised that all pressurized filters be pre-filtered using a Cetus to reduce excessive back-washing and maintenance due to heavy solids. It is designed to efficiently and effectively remove large amounts of mechanical waste from a pond. It includes the necessary parts to set it up to be gravity-fed OR pump-fed and has many benefits.

Gravity Fed: This Cetus has a variable inlet height using the unique patented Pondflow regulation system. 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 either a normal filter above pond level (such as the Nexus™ or EazyPod™) or to a pressurized filter (such as the K1 Micro Bead Filter)

Pump Fed: The sieve is placed above pond water level and then the exit water is gravity dropped into your main filter.

  • Plug and Play – comes with flexible boots to connect to pipe work
  • Greatly reduced backwashing and maintenance of pressurized filters 
  • Robust one-piece mold is totally reliable
  • Large waste collection area which slopes to 3" waste outlet
  • Patented float that gives constant flow for gravity-fed level fluctuations 
  • Tri-slot 300 micron wedge wire screen in 316L stainless steel prevents waste from bypassing
  • Increased levels of oxygen
  • Measures 33.5" x 22.4" x 37.2"
Arrangement Inlet Outlet Maximum Flow Rate
Gravity Fed 4" Fitting 2" Fitting 4755gph
Pump Fed 2" Fitting 4" Fitting

Ships by truck freight, which requires that you be present at time of delivery. Freight company will call to schedule an appointment.

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