Pre-filter to remove waste & debris
The Evolution Aqua Cetus sieve is a bow screen pre-filter, made using the latest rotational molding technology. With all of its benefits and build quality, it is undoubtedly the best of its kind on the market today, regarding quality and performance! It is designed to efficiently and effectively remove large amounts of mechanical waste from a pond. It can be set-up gravity OR pump fed and has many benefits over the original bow screen technology.
The Cetus Sieve is a self-adjusting sieve which can be installed either gravity fed or pump fed. The Cetus Sieve enables your pond water to be filtered of large amounts of waste and debris before the water enters your current filter.
| Feature | Detail |
|---|---|
| Material | Rotational molded plastic |
| Installation | Gravity fed or pump fed |
| Function | Removes mechanical waste and debris |
| Design | Self-adjusting bow screen |
FAQ
Can the Cetus Sieve be used with both gravity and pump-fed systems?
Yes, the Cetus Sieve can be installed either gravity fed or pump fed, offering flexibility in setup depending on your pond system.
What types of waste does the Cetus Sieve remove?
The Cetus Sieve efficiently removes large amounts of mechanical waste and debris such as leaves, twigs, and other solid particles from pond water.
Is the Cetus Sieve durable and long-lasting?
Yes, made with rotational molding technology, the Cetus Sieve is built for durability and long-term performance in pond environments.



Sean Slater –
Installed the Cetus Sieve in my koi pond and it has significantly reduced leaf buildup. Works well with both gravity and pump setup. Easy to clean and stays effective over time.
Bernadette Hardacre –
The self-adjusting design helps maintain a clean filter inlet. It handles debris well and doesn’t clog easily. Slightly heavier than standard bow screens, but worth the extra durability.
Stewart Lawrence –
Great improvement in water clarity. The sieve prevents large debris from reaching the main filter, which has reduced maintenance time and filter replacement frequency.