Evolution Aqua Cetus Sieve – High-Performance Pond Pre-Filter for Koi Ponds

Description

The Evolution Aqua Cetus Sieve is a high-performance gravity-fed mechanical pre-filter designed to significantly improve water clarity and reduce maintenance in koi ponds and large garden pond systems.

Manufactured in the UK by Evolution Aqua, the Cetus Sieve removes solid waste before it enters your main filtration system. This protects biological media, improves system efficiency, and helps maintain stable, healthy pond conditions.

Unlike conventional filtration setups that allow debris to pass through the system, the Cetus Sieve separates waste at the earliest possible stage. This reduces strain on pumps and downstream filters while improving overall water flow and clarity.

Why use the Cetus Sieve

Poor mechanical filtration leads to clogged systems, reduced oxygen levels, and unstable water quality. The Cetus Sieve solves this by acting as a high-efficiency first stage filter that removes leaves, sludge, uneaten food, and fine solids before they break down into harmful compounds.

Key benefits include:

• Improved water clarity
• Reduced maintenance on biological filters
• Lower strain on pumps and equipment
• More stable water quality for koi health
• Increased overall system efficiency

How it works

Water enters the Cetus Sieve via gravity feed and passes over a precision stainless steel screen. Solid waste is separated and collected while clean water continues through to the pump and biological filtration system.

A built-in float regulation system maintains consistent water level and flow performance, even under varying waste loads. This ensures reliable operation without manual adjustment during normal use.

Designed for koi pond systems

The Cetus Sieve is widely used in serious koi pond installations due to its reliability, high flow capability, and ease of maintenance. It is commonly paired with Evolution Aqua biological filters and moving bed systems to create a complete filtration solution.