Description
The Evolution Aqua Cetus Sieve Pre-Filter is a high-performance mechanical filtration unit designed to remove solid waste from pond water before it reaches the main filtration system.
By capturing debris at an early stage, the Cetus reduces pressure on biological filters, improves water clarity and increases overall system efficiency.
It is commonly used ahead of Nexus systems, drum filters and moving bed filters in high-end koi pond installations.
Gravity Fed Cetus Sieve
In gravity fed installations, water flows directly from the bottom drain into the Cetus sieve.
Benefits:
✔ Excellent solids removal efficiency
✔ Reduces load on main filter
✔ Stable flow performance
✔ Ideal for new koi pond builds
✔ Improves overall system clarity
Typical setup:
Bottom drain → Cetus Sieve → Pump → Nexus / Drum filter → Pond return
Pump Fed Cetus Sieve
In pump fed systems, water is pushed into the sieve by a pond pump.
Benefits:
✔ Easy retrofit installation
✔ No deep chamber required
✔ Flexible placement options
✔ Works with existing pond systems
Typical setup:
Pump → Cetus Sieve → Filtration system → Pond return
Key Features
✔ High efficiency mechanical pre-filtration
✔ Removes heavy solids before main filtration
✔ Suitable for gravity or pump fed systems
✔ Reduces maintenance on biological filters
✔ Improves pond water clarity
✔ Transparent viewing chamber (visual inspection)
✔ Easy cleaning system
✔ Durable construction for outdoor use
✔ Designed for koi pond systems
How the Cetus Sieve Works
Water enters the sieve chamber where a fine mesh screen separates solid waste from clean water.
Debris is retained and periodically flushed away, while clean water passes through to the next stage of filtration.
This prevents heavy waste from entering biological filters and improves long-term system efficiency.
Recommended Applications
- Koi ponds
- Nexus filter systems
- Drum filter pre-filtration
- Moving bed systems
- High stocking density ponds
- Commercial koi installations
Maintenance
- Regular waste flushing
- Screen inspection and cleaning
- Minimal moving parts for reliability
- Easy access design
Key Benefits
The Cetus Sieve significantly improves:
- Filter efficiency
- Water clarity
- Biological filter lifespan
- System stability
- Maintenance intervals
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