Rotary Drum Filters for Fish Ponds & Aquarium Tanks
The Pureflow Rotary Drum Filter is a high-performance automatic pond filter designed for koi ponds, fish ponds, and advanced RAS filtration systems. As water passes through the system, it immediately captures fine suspended solids, significantly improving water clarity, reducing organic load, and supporting optimal water quality for aquatic life.
Moreover, the filter features an automated backwash process, so it operates continuously while requiring minimal maintenance. At the same time, it consumes very little energy, which ensures cost efficiency. Since it is built with corrosion-resistant food grade polypropylene, it performs reliably for years in both freshwater and saltwater environments.
In addition, the Pureflow Drum Filter suits ornamental koi ponds, garden fish ponds, public aquariums, and commercial hatcheries. Because of its scalable design, it adapts seamlessly to both small setups and large RAS facilities. Consequently, users achieve sustainable, precise, and dependable water management without hassle.
Ultimately, when you need crystal-clear water, lower organic waste, and long-term reliability, Pureflow stands as the trusted solution for modern aquatic filtration.
High-Performance Drum Filters for Koi Ponds & Aquaculture – Pureflow Biofloc
Looking for the best rotary drum filter for your koi pond, aquaculture farm, or RAS system?
Pureflow Biofloc Drum Filters provide automatic, fine-particle filtration that keeps water crystal clear while promoting healthier fish. Since they use advanced micron mesh screening, they remove solid waste before it breaks down. As a result, ammonia levels decrease, and biofiltration efficiency improves significantly.
Because these filters are designed for both freshwater and saltwater applications, they suit a wide range of needs. Whether you require a gravity-fed setup or a pump-fed design, our solutions adapt effortlessly. Therefore, they work perfectly for small hobby ponds, ornamental koi ponds, or large-scale aquaculture tanks and RAS filtration systems.
In addition, every system comes backed by Indian manufacturing expertise, which ensures durability, reliable after-sales support, and easy availability of spare parts. Moreover, since we deliver across India, Asia, and the Middle East, you can always count on Pureflow Biofloc for dependable and cost-effective aquatic filtration.
Upgrade to Pureflow Drum Filters – the clear choice for clean water.
- Filtration degree from 10.000 down to 10 micron.
- Wide range of flow rates: 1m³/h – 4000 m³/h or 4.4 gpm – 17611 gpm.
- Filtration without flow interruption.
- Automatic Backwashing with means of both Pressure Difference and Timer.
- Multiple material, tank type and frame type fabrication and design options.
- Easy and hassle free maintenance.
- Large Filtration area with 75% of Submerged Drum options.
- Available with ATEX certificate requirements.
- Mechanical Self Cleaning Filters
- Drum Filters are able to operate in water with high salt concentration, providing corrosion resistance in particularly chloride stress conditions and chloride pitting corrosion.
Key Features for Koi Fish Ponds
Efficient Solid Waste Removal
Drum filters use automatic pond filter, fine mesh screens (typically 20–75 microns) to capture suspended solids before they break down, improving water clarity and quality.
Automatic pond filter
Equipped with automatic pond filter self-cleaning and backwash systems, drum filters require minimal manual maintenance, saving time and labor.
Consistent Water Flow
The design maintains a steady water level and flow rate, ensuring stable conditions for aquatic life.
Energy Efficiency
Low-power motors and gravity-fed options reduce electricity consumption compared to traditional filtration systems.
Durability & Corrosion Resistance
Built from stainless steel or polypropylene, drum filters withstand harsh water conditions in freshwater and saltwater applications.
Versatility
Suitable for koi ponds, aquaculture, hatcheries, public aquariums, and industrial water treatment systems.
Improved Biofiltration
Removing solids early reduces biological filter load, improving treatment efficiency.
How it Work DRUM FILTERS OPERATION PROCESS IN 6 STEPS
- 1. Water Inflow Automatic pond filter or system water enters the drum through the inlet, carrying suspended solids, waste, and debris
- 2. Filtration Through Micron Mesh The rotating drum is lined with a fine mesh screen (typically 20–75 microns) that traps solid particles while clean water passes through to the outlet
- 3. Waste Accumulation As solids build up on the mesh surface, water flow becomes slightly restricted, causing the water level inside the drum to rise.
- 4. Level Sensor Activation A water-level sensor detects this rise and automatically triggers the backwash cleaning cycle.
- 5. High-Pressure Backwash Spray nozzles use high-pressure water to flush trapped solids from the mesh into a waste trough, directing them out of the system.
- 6. Continuous Filtration The drum resumes normal rotation, and filtration continues without stopping water flow, ensuring uninterrupted operation. automatic pond filter
Application of DRUM FILTERS (RDF)
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- Koiponds & ornamental garden ponds
- Freshwater & saltwater aquaculture systems
- Recirculating Aquaculture Systems (RAS)
- Public aquarium filtration systems
- Pre-filtration for biological filter setups
Technical Specifications of Drum Filter (RDF) 5-200
-
Parameter
Value
Flow Rate
1-200 m³/hr
Mesh Size
30–100 microns
Material
Polypropylene (PP) / SS316
Drive Type
Gravity or Pump-fed
Cleaning Cycle
Automatic, sensor-based
Power Usage
0.25–1.5 kW
Drum Filters (RDF) Maintenance Recommendations
-
- Inspect
mesh regularly for tears or clogging
- Check
spray nozzles for blockages
- Clean
sensors to maintain proper cycle timing
- Service
moving parts annually for best performance
- Inspect
mesh regularly for tears or clogging
Frequently Asked QuestionsDrum Filter (RDF)
1. What is a Drum Filter (RDF)?
A Drum Filter (RDF) is an automatic mechanical filtration system that removes solid waste from water in koi ponds, aquaculture farms, and RAS.
2. How does a Drum Filter work?
An RDF uses a rotating drum with a fine mesh screen that traps particles and automatically backwashes waste into a drain.
3. Why use a Drum Filter in aquaculture or koi ponds?
It keeps water clean, healthy, and low-maintenance, improving fish health and reducing manual cleaning.
4. Where are Drum Filters used?
They are used in koi ponds, fish farms, RAS, aquariums, and wastewater treatment plants.
5. What is the mesh size of an RDF?
RDF mesh sizes usually range from 30 to 100 microns for fine particle filtration.
6. Do Drum Filters need maintenance?
Maintenance is minimal since RDFs clean automatically with a spray system.
7. How much water does an RDF waste during cleaning?
Very little water is used, making RDFs eco-friendly and water-efficient.
8. Can RDFs work with biofilters?
Yes, they are commonly paired with MBBR, Bakki Showers, and Bio Chambers for complete filtration.
9. How long does a Drum Filter last?
A quality RDF made from polypropylene or stainless steel can last 10–15 years or more.
10. Is a Drum Filter energy-efficient?
Yes, RDFs use low power and minimal water, making them cost-effective for aquaculture and ponds.
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