Red Label Combi HAPPY Filter with Media
£2,695.00
In stock (can be backordered)
Description
Red Label Combi Happy Filter | Gravity
Professional Drum Filtration System for Koi Ponds
Model: Combi Happy 20/25
Product Overview
A koi pond is a precision-managed aquatic system where mechanical separation, biological filtration, and hydraulic efficiency directly influence fish health and long-term water stability. The Red Label Combi Happy Filter | Gravity (20/25) is engineered for professional koi keepers, installers, and serious enthusiasts who require consistent performance, high throughput, and dependable long-term operation.
This system integrates advanced drum filtration technology, biological media capacity, and a built-in UVC Clarifier into a single, compact filtration platform designed for medium to large koi pond installations.
Key Performance Features
High-Performance Mechanical and Biological Filtration
The drum filter provides fine mechanical separation down to 120 microns, ensuring the effective removal of suspended solids before waste enters the biological stage. This protects beneficial bacteria, stabilises water parameters, and maintains high water clarity under continuous load conditions.
Integrated Flushing and Drum Control System
An internally mounted flushing pump and dedicated drum controller automate cleaning cycles, ensuring consistent waste removal while minimising manual intervention. This design improves operational reliability and reduces long-term maintenance requirements.
Built-In 40-Watt H-O Amalgam UVC Clarifier
The integrated 40-watt H-O amalgam UVC Clarifier is engineered to suppress algae, bacteria, and waterborne pathogens without restricting hydraulic flow. By combining ultraviolet treatment directly within the filtration process, the system delivers consistently clear and biologically stable pond water without the need for external UV units.
Patented Drum Sealing System
A patented sealing mechanism ensures consistent drum performance, minimises water bypass, and extends component service life. This design maintains filtration efficiency and reliability across long-term continuous operation.
Capacity and Application
- Maximum Flow Rate: 25,000 litres per hour (5,500 UK gallons per hour)
- Maximum Recommended Koi Pond Volume: 20,000 litres (4,400 UK gallons)
The Combi Happy 20/25 is ideally suited for medium to large koi ponds requiring stable, high-throughput filtration with integrated mechanical, biological, and ultraviolet water treatment.
Check out our Happy Trickle Filter
Discover even more products and extended ranges on our parent company’s website – www.westmidlandskoi.com
Specification
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions (L × W × H) | 1030 × 866 × 990 mm |
| Drum Panel Size | 400 × 400 mm |
| Filter Mesh Size | 120 μm |
| Maximum Flow Rate | 25,000 l/h (5,500 UK gph) |
| Maximum Koi Pond Volume | 20,000 litres (4,400 UK gallons) |
| Inlets | 3 × 110 mm / 4″ |
| Outlets | 2 × 110 mm / 4″ |
| Power Consumption | 750 W |
| Motor Torque | 48 Nm |
| Built-In UVC Clarifier | 40-watt H-O Amalgam |
| Flushing Pump | Internal, integrated system |
| Air Diffusers (Included) | 2 × 50 × 300 mm |
| Recommended Air Flow Rate | Minimum 100 litres per minute |
| Red-X Filter Mats (Included) | 2 square metres (2 m²) |
| Control System | Integrated drum controller with simplified regulation |
Supplied Filter Media
Supplied Filter Media and System Components
The Red Label Combi Happy 20/25 is supplied as a complete, ready-to-install filtration solution, including:
-
2 m² Red-X cassette filter mats
-
Hel-X biocarrier media (100 litres)
-
Integrated flushing pump
-
Patented drum sealing system
-
Dedicated drum controller
-
Built-in 40-watt UVC Clarifier (this model)
Gravity vs Pumpfed
Gravity-Fed vs Pump-Fed Model Options
| Feature | Gravity-Fed Version | Pump-Fed Version |
|---|---|---|
| Installation Method | Installed at pond water level; water flows into the filter by gravity | Installed remotely or above pond level; water is delivered via an external pump |
| Energy Efficiency | High efficiency due to reduced main circulation pumping | Dependent on pump specification and system head height |
| Hydraulic Stability | Provides stable, constant flow with minimal head loss | Flow rate regulated by pump selection and installation layout |
| Noise Profile | Very low | Moderate, dependent on external pump type |
| Recommended Applications | Professional builds, permanent koi ponds, and filter pit installations | Raised ponds, retrofits, and locations where gravity flow is not practical |
