⚙️ What Is a Combi Drum Filter?
A Combi Drum Filter is an all-in-one filtration unit that integrates:
A Drum Filter (RDF) → for mechanical filtration, removing solid waste
A Biofilter chamber → for biological filtration, converting harmful toxins
It delivers clear, healthy, oxygen-rich water — automatically and continuously.
💧 Why Use a Combi Drum Filter?
🔹 1. Two Filters in One System
- The drum section removes suspended solids (fish waste, debris).
- The bio section houses media (like moving bed K1, bio balls, or ceramic media) for bacterial growth.
✅ Result: Both mechanical and biological filtration happen in one unit.
🔹 2. Space-Saving & Compact Design
Traditional systems require two separate tanks — one for RDF and one for biofiltration.
This combines both in a single compact body, reducing footprint.
✅ Ideal for small filter rooms or limited spaces.
🔹 3. Fully Automatic Operation
- The drum filter self-cleans automatically using float sensors and spray nozzles.
- Waste is flushed out without manual cleaning.
✅ Result: Continuous filtration with minimal maintenance.
📊 Comparison: Drum Filter vs Bio Filter vs Combi Drum Filter
| Feature | Drum Filter | Bio Filter | Combi Drum Filter |
|---|---|---|---|
| Removes solids | ✅ | ❌ | ✅ |
| Biological filtration | ❌ | ✅ | ✅ |
| Automation | ✅ | ❌ | ✅ |
| Space-saving | ❌ | ❌ | ✅ |
| Maintenance | Low | Medium | Very Low |
| Installation | Moderate | Moderate | Easy (Plug & Play) |
| MODEL | SIZE (mm) |
WATER VOLUME (m³) |
MAX. FLOW (m³/h) |
UV POWER (w) (Customized) |
WATER INLET (mm) (Customized) |
WATER OUTLET (mm) (Customized) |
|---|---|---|---|---|---|---|
| CDRF - 5 | 1050*450*740 | 5 | 5 | 30*2 | 50 | 63 |
| CDRF - 15 | 1650*550*970 | 15 | 15 | 40*2 | 50 | 63 |
| CDRF - 25 | 2250*750*1250 | 25 | 25 | 50*2 | 90 | 110 |
| CDRF - 50 | 3000*850*1400 | 50 | 50 | 60*2 | 110 | 110 |
| CDRF - 100 | 4000*1000*1550 | 100 | 100 | 75*4 | 110 | 200 |




