Combi Drum Filter: Efficient Filtration for Aquaculture Farms

🌊 Pureflow Combi Drum Filter for Koi Ponds & Aquaculture

Complete Filtration System with Mechanical, Biological & UV Treatment

Combi Drum Filter, Maintaining crystal-clear, healthy water in Koi ponds, ornamental ponds, and Recirculating Aquaculture Systems (RAS) is a constant challenge. Uneaten feed, suspended solids, fish waste, and harmful pathogens quickly deteriorate water quality, stressing fish and disrupting bio-balance.

Pureflow’s Combi Drum Filter solves these challenges by integrating mechanical filtration, biological treatment, and UV sterilization into one compact, automatic unit. Unlike traditional pond filters, this self-cleaning system continuously removes solids, supports nitrifying bacteria, and neutralizes pathogens, thereby ensuring clean, balanced, and disease-free water.

🔑 Core Features of Pureflow Combi Drum Filters

Choosing the right filtration system determines the long-term health of your pond or aquaculture setup. A standard drum filter removes solids effectively, but it does not address ammonia levels or disease-causing organisms.

The Combi Drum Filter solves this gap by integrating:

- 1. Automatic Mechanical Filtration
  - Fine micron mesh screen captures fish waste, uneaten feed, algae particles, and suspended solids.
  - Automated drum rotation and backwash system flushes out debris before it breaks down.
  - This prevents ammonia spikes, reduces oxygen demand, and keeps water visibly clear.
  - 👉 Learn more about our advanced Rotary Drum Filters for standalone solid removal.
  2. Integrated Biochamber for Biological Filtration
  - High-surface-area bio-media supports colonies of nitrifying bacteria.
  - Converts ammonia → nitrite → nitrate, maintaining a stable nitrogen cycle.
  - Enhances biofiltration capacity in high-density fish environments.
  - 👉 For large-scale biological treatment, explore our Moving Bed Bio Reactors (MBBR).
  3. UV Sterilization for Pathogen Control
  - High-output UV lamps in protective quartz sleeves.
  - Neutralizes harmful bacteria, parasites, viruses, and algae spores.
  - Improves water transparency while reducing fish disease risks.
  - 👉 See how we protect fish health with ourUV Water Disinfection Systems.
  4. Durable, Corrosion-Resistant Construction
  - Manufactured from stainless steel (SS304/SS316) and polypropylene.
  - Withstands outdoor conditions, saltwater exposure, and heavy use.
  - Provides long service life and consistent performance.
  5. Energy-Efficient & Low Maintenance
  - Self-cleaning backwash system minimizes manual labor.
  - Energy-efficient motors and pumps reduce running costs.
  - Simple installation and user-friendly operation.

Because all three filtration stages work together, the system not only enhances water clarity but also creates a balanced, stable environment where fish thrive.

⚙️ How It Works – Step by Step

COMBI DRUM FILTER OPERATION & BACKWASH PROCESS IN 6 STEPS

Water Entry: Pond or tank water enters the filter chamber.
Mechanical Stage: Rotating drum with fine mesh traps suspended solids.
Backwash Cleaning: Drum automatically rinses away debris with minimal water loss.
Biological Stage: Water flows into the biochamber, where beneficial bacteria process nitrogenous waste.
UV Sterilization: Water passes through UV lamps, eliminating pathogens and algae spores.
Clean Water Return: Filtered, sterilized water flows back into the pond or tank, ensuring a healthy environment.

🐟 Key Benefits of Pureflow Combi Drum Filters

Crystal-Clear Water – Removes suspended solids and reduces organic load.
✔️ All-in-one solution: mechanical + biological + UV in a single system
✔️ Healthy fish environment: reduces stress, improves colors, and enhances fish growth
✔️ Sustainable operation: lowers energy use, saves water, and reduces chemical treatments
✔️ Stable water parameters: keeps ammonia, nitrite, and nitrate levels under control
✔️ Low maintenance: automated cleaning means more time enjoying your pond
✔️ Flexible design: works with gravity-fed and pump-fed setups
Automatic Self-Cleaning – Saves time and minimizes manual maintenance.
Healthier Fish – Stable water parameters and pathogen control improve immunity and growth.
Energy-Efficient – Designed for continuous operation with low power consumption.
Durable Build – Made from corrosion-resistant stainless steel and polypropylene for long life in outdoor environments.
Versatile Applications – Works in freshwater and saltwater systems.
Scalable Design – Suitable for hobby ponds, ornamental koi ponds, aquaculture farms, and commercial RAS facilities.
👉 Complement your Combi Drum Filter with our Bakki Shower Filters for maximum oxygenation and extra biofiltration.

📍 Applications of Combi Drum Filters

Pureflow’s Combi Drum Filter is ideal for:

- 🐠 Koi ponds & Japanese Koi ponds – ensures water clarity and fish health
- 🌿 Ornamental ponds & garden water features – enhances beauty and reduces algae
- 🏢 Public aquariums & display tanks – keeps large tanks clear and hygienic
- 🐟 Commercial aquaculture farms & hatcheries – supports stable fish production
- 🔄 RAS aquaculture facilities – provides precise, large-scale water management
- 👉 Discover more about our RAS Skid Filtration Units designed for intensive aquaculture.

🛠️ Built for Reliability

Every Combi Drum Filter is engineered with corrosion-resistant stainless steel and high-grade polypropylene. This combination guarantees:-

Long service life, even under continuous outdoor use
Resistance to both freshwater and saltwater corrosion
Low maintenance costs due to robust construction
Easy installation with gravity-fed or pump-fed designs

🌱 Sustainability & Fish Health

Because water quality directly impacts fish health, the Combi Drum Filter focuses on balancing the nitrogen cycle and controlling pathogens. With ammonia and nitrites quickly converted into safer nitrates, fish experience reduced stress, stronger immunity, and faster growth. Meanwhile, UV sterilization ensures a disease-free environment without the use of chemicals.

This makes the system not just a filtration unit but a sustainable solution for long-term pond and aquaculture management.

🏆 Why Choose Pureflow’s Combi Drum Filter?

It offers 3-in-1 functionality (Mechanical + Biological + UV) in a single compact unit.
Saves space, water, and maintenance time compared to separate systems.
Perfect for Koi enthusiasts, aquaculture farms, and public aquariums that want stable, clear, and disease-free water.
Unlike standalone drum filters, it’s a complete water treatment solution.

👉 However, for ponds that need extra oxygenation and high biofiltration capacity, pairing your Combi Drum Filter with a Bakki Shower Filter can deliver the ultimate setup.

FAQ – Combi Drum Filters with Biochamber and UV

1. What is a Combi Drum Filter with Biochamber and UV?
A Combi Drum Filter combines mechanical filtration, biological filtration, and UV sterilization in one unit. It removes waste, converts harmful compounds, and kills algae or pathogens, ensuring clean and healthy pond water.

2. How does the mechanical drum filter work?
The drum filter uses a fine mesh screen (40–70 microns) to trap suspended solids. It then automatically flushes debris out through a backwash cycle, keeping the water clear without manual cleaning.

3. What is the role of the biochamber in the filter?
The biochamber houses high-surface-area media, where beneficial nitrifying bacteria grow. These bacteria convert toxic ammonia and nitrite into less harmful nitrate, balancing the pond’s nitrogen cycle.

4. Why is a UV sterilizer important in a pond filter?
The UV sterilizer kills algae spores, bacteria, and parasites. As a result, it reduces green water, lowers disease risks, and improves fish health.

5. What size pond can a Combi Drum Filter handle?
Pureflow models can be customized for flow rates from 2,000 L/h to 100,000 L/h, making them suitable for small ornamental ponds to large commercial Recirculating Aquaculture Systems RAS systems.

6. Is maintenance difficult?
No. The cleaning process is fully automated, requiring minimal manual work. Regular checks ensure peak performance.

7. Can it be used in Recirculating Aquaculture Systems (RAS)?
Yes. The system works perfectly in koi ponds, ornamental ponds, and RAS setups, providing stable water parameters and high filtration efficiency.

📊 Comparison: Canister Pond Filter vs. Drum Filter vs. Pureflow Combi Drum Filter

Feature / System	Canister Pond Filter	Standard Drum Filter	Pureflow Combi Drum Filter
Mechanical Filtration	✅ Basic sponges and pads trap debris, but clog quickly	✅ Fine mesh drum removes suspended solids efficiently	✅ Fine micro-screen removes solids automatically + pre-bio protection
Biological Filtration	❌ Limited bio-media capacity	❌ Requires a separate biofilter	✅ Integrated biochamber with high-surface-area media for nitrification
UV Sterilization	❌ Optional add-on, not always included	❌ Not integrated (needs separate UV system)	✅ Built-in UV sterilizer neutralizes bacteria, parasites, and algae spores
Automation	❌ Manual cleaning required (frequent)	✅ Automatic self-cleaning with backwash	✅ Fully automatic cleaning + integrated bio and UV – true plug & play
Maintenance	❌ Frequent sponge/pad cleaning needed	✅ Minimal (waste flushed automatically)	✅ Minimal (solids flushed + biochamber self-supporting)
Durability	⚠️ Mostly plastic, prone to wear outdoors	✅ Stainless steel/polypropylene, robust, designed for ponds & RAS	✅ Stainless steel + polypropylene, long-lasting, designed for ponds & RAS
Capacity / Scalability	Small ponds & aquariums only	✅ Handles medium to large ponds	✅ Scales from small koi ponds to commercial aquaculture & RAS
Installation Space	Compact, easy for small ponds	Requires space for filter + biofilter	✅ Compact “all-in-one” design (drum + bio + UV)
Best For	Hobbyists with small, low-stock ponds	Pond keepers with larger koi ponds who can add separate bio/UV	✅ Serious koi keepers, public aquariums, hatcheries, and RAS facilities