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 SieveThe 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.
