The Cetus Sieve from Evolution Aqua is a bow screen pre-filter that is the next level in filtration. It is available in both gravity and pump fed versions and uses the latest rotational moulding technology. Constructed as a single complete moulded unit it features a flush fitted 300 micron screen which will retain large pieces of waste and debris.
With it’s maximum flow rate of 18000 litres per hour it’s ideal for use with large ponds. It also comes complete with flexible boots to connect to pipework meaning it’s easy to install.
This unit will strain away large pieces of debris and waste. The water then flows to a filter, meaning that this set up reduces the workload that those filters have to cope with, meaning they will last longer, work more efficiently and require less maintenance. The Cetus Sieve is the perfect complement to the Nexus Eazy or Eazy Pod, or indeed any pressurised filter. It will also allow a skimmer or bottom drain to accept huge amounts of waste without excessive cleaning needing to be carried out.
If pump fed, the sieve is placed above pond water level and then the exit water is gravity dropped into your main filter. 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. 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 either a normal filter above pond level (Nexus / Eazy Pod) or to a pressurised filter.
The system results in reduced backwashing and maintenance caused by heavy solids. Other benefits include increased levels of oxygen entering the flow as the water is moved vigorously through the sieve.