The ready-to-install RAS crayfish farm with a water surface area of 216 m² is designed for commercial cultivation of Australian Redclaw crayfish and other freshwater species. The system is engineered as a fully integrated recirculating aquaculture solution, allowing stable year-round production with controlled water quality and optimized stocking density.

This farm configuration is based on proven aquaculture engineering principles and includes cultivation tanks, biological filtration, mechanical filtration, aeration, and water circulation. The layout is optimized for efficient space utilization, stable biofiltration performance, and convenient operational workflow.

Industrial RAS Crayfish Farm Configuration

The system includes a multi-level rack arrangement designed for intensive crayfish cultivation. Tanks are configured to maximize usable area while maintaining stable water parameters and efficient circulation.

This layout allows operators to manage different production stages within one facility, including grow-out, broodstock holding, and juvenile rearing.

• 36 cultivation containers 3000 × 1000 × 250 mm
• 24 cultivation tanks 3000 × 1500 × 250 mm
• Optimized rack layout for high-density production
• Uniform water distribution across all levels

Advanced Filtration System for Stable Water Quality

The farm is equipped with both mechanical and biological filtration to maintain stable water parameters under high biological loads. This combination ensures effective removal of suspended solids and continuous nitrification.

The filtration capacity is designed for intensive crayfish farming and supports stable operation even with high stocking density.

• Biological filter 2.8 m³ with bio media loading
• Drum filter for mechanical water treatment
• Designed for high ammonia and nitrite removal
• Stable nitrification for continuous production

Water Circulation and Aeration System

Efficient water circulation is essential for maintaining uniform water quality across the entire farm. The system uses multiple circulation pumps and centralized aeration to ensure stable oxygen levels and continuous water movement.

The aeration system supports biological filtration performance and provides optimal conditions for Australian Redclaw crayfish growth.

• 3 circulation pumps
• 2 industrial air compressors
• Centralized aeration distribution
• PVC piping system with valves and fittings

Total System Capacity

The RAS crayfish farm provides a total system water volume of approximately 55 m³ with a water surface area of 216 m². This configuration allows intensive cultivation while maintaining stable environmental parameters.

The system is suitable for commercial production, broodstock management, and juvenile rearing within a single integrated facility.

Typical Applications

The farm configuration supports multiple production strategies depending on operational goals.

• Commercial Australian Redclaw crayfish farming
• Broodstock holding and breeding programs
• Juvenile incubation and grow-out
• Multi-stage crayfish production systems

RAS Technology for Crayfish Farming

Recirculating aquaculture system technology allows precise control of water quality parameters including temperature, oxygen, ammonia, and nitrite levels. This significantly improves survival rate and growth performance.

The closed-loop design minimizes water consumption and enables year-round production independent of climate conditions.

Scalable Commercial Crayfish Production

The 216 m² RAS crayfish farm can serve as a standalone commercial facility or as a module within a larger production complex. The system is designed for scalability and can be expanded by adding additional racks and filtration capacity.

This approach allows gradual growth of production volumes while maintaining stable biological conditions and predictable operational performance.

Pre-Configured Crayfish Farms and Modular Systems

Building a commercial crayfish farm requires more than theoretical knowledge. Australian Redclaw crayfish farming in recirculating aquaculture systems (RAS) demands precise control of water quality, stable biological filtration, and system architecture designed specifically for crustaceans. Even small design mistakes can affect growth rate, survival, and overall farm productivity.

We specialize in the design and construction of Australian Redclaw crayfish farms based on real operational experience. Our solutions are developed from running a working crayfish RAS facility, allowing us to create production systems that are reliable, scalable, and optimized for commercial performance.

Practical Experience in Australian Redclaw Crayfish Farming

Our engineering decisions are based on hands-on experience operating a functioning crayfish farm. This allows us to understand the biological behavior of Australian Redclaw crayfish, optimal stocking densities, feeding regimes, and filtration requirements under real production conditions.

Instead of relying on theoretical calculations, we apply proven solutions tested in daily farm operation. This approach reduces startup risks, improves survival rates, and ensures stable growth performance from the early stages of production.

Design of Commercial Crayfish Farming Systems

Each crayfish farm is designed individually according to production targets, available space, and future expansion plans. We develop scalable RAS configurations that allow operators to start with a pilot facility and expand to industrial capacity without redesigning the entire system.

Special attention is given to system stability, biofiltration capacity, water circulation, and operational convenience. All components are engineered to support intensive Australian Redclaw crayfish cultivation.

Key Design Considerations

Our design process focuses on long-term reliability and biological stability of the farming system.

• RAS architecture optimized for crayfish behavior
• biofiltration sizing based on real biomass load
• stable water flow distribution
• temperature control and system redundancy

Construction and Commissioning of Crayfish Farms

We manage the full implementation process, including system installation, equipment integration, and startup procedures. Proper commissioning is essential for establishing biological filtration and achieving stable operating parameters.

During startup, the system is gradually loaded and adjusted to ensure safe adaptation of crayfish and stable nitrification performance. This controlled approach minimizes biological stress and improves early-stage survival.

Implementation Stages

The construction and launch process follows a structured sequence to ensure predictable results.

• facility preparation and engineering setup
• installation of RAS tanks and filtration systems
• system testing and biological startup
• transition to operational production mode

Equipment Designed for Crayfish Farming

We use equipment developed specifically for intensive crayfish aquaculture. Our in-house production allows us to adapt system components to the biological and hydraulic requirements of Australian Redclaw crayfish farming.

This approach ensures compatibility between tanks, filtration units, aeration systems, and circulation layout. It also improves reliability and simplifies maintenance.

Main RAS Components for Crayfish Farms

Each system is configured based on production scale but typically includes the following core elements.

• mechanical and biological filtration systems
• aeration and oxygenation equipment
• water circulation and hydraulic control
• monitoring and backup systems

Australian Redclaw Juvenile Supply

We provide Australian Redclaw juveniles adapted for RAS cultivation. This ensures consistent startup conditions and reduces risks associated with sourcing stock from unknown suppliers.

Using properly acclimated juveniles improves survival rate, growth uniformity, and overall farm performance during the initial production cycle.

Operational Training and Technical Support

Successful crayfish farming depends on proper operation and system management. We provide training based on real farm practices, including feeding strategies, biomass management, and water parameter control.

After commissioning, we continue to support operators with recommendations, performance optimization, and scaling strategies as production increases.

Professional Construction of Australian Redclaw Crayfish Farms

Our approach combines practical farming experience, specialized equipment, and biological expertise. This allows us to design and build crayfish farms that operate reliably and deliver predictable production results.

The result is a scalable aquaculture facility optimized specifically for Australian Redclaw crayfish cultivation using modern RAS technology.

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Maintaining stable water parameters is a critical requirement for modern aquaculture and closed water systems (CWS). The 2-chamber biofilter with a total working volume of 2.8 m³ is engineered for high-load applications where reliable biological filtration directly impacts stock health, growth rates, and system stability.

This model is designed for professional use in large recirculating aquaculture systems, ponds, and commercial aqua farms, where elevated levels of ammonia and nitrite must be treated continuously and efficiently.

High-Capacity Biological Filtration

The biofilter features a 1,600-liter active bio-media zone, allowing operators to combine different types of floating and fixed media for optimal bacterial colonization. This configuration ensures stable nitrification even under fluctuating biomass loads.

• Up to 800 liters of floating media for intensive ammonia conversion
• Up to 800 liters of fixed or textured media for long-term bacterial stability
• Designed for continuous operation in high-density systems

Durable Industrial Construction

The housing is manufactured from 10 mm thick food-grade polypropylene, offering long service life in demanding aquaculture environments. The material is resistant to moisture, aggressive water chemistry, and mechanical stress.

• Corrosion-free and chemically resistant body
• Safe for all fish and crustacean species
• Suitable for indoor and outdoor installations

Optimized Hydraulics and Aeration

To eliminate dead zones and ensure uniform flow through the biological media, the filter is equipped with four inlet and four outlet connections (Ø110 mm). This layout promotes even water distribution and stable biofilm performance.

An integrated aeration system with four disc diffusers (Ø270 mm) maintains high dissolved oxygen levels inside the chambers, which is essential for nitrifying bacteria and overall system efficiency.

How the 2-Chamber Biofilter Operates

1. Water enters the first chamber, where flow is stabilized and evenly distributed.
2. The second chamber performs biological treatment as beneficial bacteria convert ammonia and nitrite into less harmful compounds.
3. Aeration supports bacterial activity and prevents anaerobic zones.
4. Treated water exits through four outlets and returns to the system.

Application Areas

The 2.8 m³ biofilter is a versatile solution for a wide range of aquaculture applications:

• Large recirculating aquaculture systems (RAS)
• Commercial fish farms and hatcheries
• Crayfish and shrimp production facilities
• Sturgeon and trout farming systems
• Decorative and functional ponds requiring stable water quality

This biofilter is engineered for professionals who require predictable performance, scalability, and long-term reliability. It integrates seamlessly into modern aquaculture infrastructure and supports sustainable, high-efficiency production.

2-Chamber 1.5 m³ Biological Filter for Stable Water Quality

The CrawTec 1.5 m³ biological filter is designed for effective biofiltration in closed water supply systems, aquaculture farms, and ornamental ponds. It ensures stable water parameters by biologically converting ammonia and nitrites into less harmful nitrates, creating safe and healthy conditions for fish, shrimp, and crayfish.

The two-chamber configuration improves treatment efficiency by separating mechanical pre-filtration from biological processes. This design allows the biofilter to operate consistently even under high organic loads.

Key Technical Features

• Total biofilter volume: 1.5 m³
• Bio-media capacity: up to 1000 litres (floating and fixed media)
• Effective bio-surface area: up to 1000 m²/m³
• Housing material: food-grade polypropylene, 10 mm thick
• Overall dimensions: 2000 × 740 × 950 mm

• Inlet connections: 3 × Ø110 mm
• Outlet connections: 3 × Ø110 mm
• Aeration system: 3 disc diffusers Ø340 mm
• Compressor included for stable oxygen supply

Operating Principle and Applications

In the first chamber, water flow slows down and mechanical particles are retained, reducing turbidity and preparing the water for biological treatment. In the second chamber, beneficial bacteria colonise the bio-media and convert toxic ammonia and nitrites into nitrates through natural biological processes. Integrated aeration maintains high oxygen levels, accelerating bacterial activity and improving filtration efficiency.

This biofilter is suitable for closed water supply systems, fish farms, aquaculture facilities, and ornamental ponds. Its robust construction, high biological efficiency, and simple maintenance make it a reliable solution for both commercial and professional aquaculture operations.

• Stable biological purification with minimal maintenance
• Durable construction for long-term industrial use
• Flexible integration into various aquaculture systems

75 m³ Drum Filter for Aquaculture and Fish Farming

The CrawTec 75 m³ drum filter is a high-capacity mechanical filtration solution designed for intensive aquaculture and closed-circuit water systems. It provides continuous removal of suspended solids and organic contaminants, ensuring stable water quality for fish, shrimp, and crayfish farming.

Water passes through a stainless steel filtration screen with a fineness of 63 microns, capturing even the smallest particles. As contaminants accumulate, an automatic control system activates the cleaning cycle: the drum rotates and the integrated flushing pump washes impurities into the drain, allowing uninterrupted operation without manual intervention.

Technical Features

• Maximum flow capacity up to 75 m³
• Drum filtration mesh: stainless steel, 63 microns
• Housing material: food-grade polypropylene, 10 mm thick
• Overall dimensions: 900 × 900 × 1000 mm
• Inlet connections: 4 × 110 mm
• Outlet connections: 4 × 110 mm
• Gear motor power: 120 W for smooth drum rotation
• Automatic flushing system with integrated pump

Applications and Operational Benefits

This drum filter is suitable for medium and large-scale aquaculture facilities, including closed-circuit water systems, industrial fish farms, and high-volume ornamental ponds. It is commonly used in the cultivation of sturgeon, carp, shrimp, and Australian crayfish, where consistent water clarity is critical.

• Fully automated operation with level sensors
• Minimal maintenance and low operating costs
• Stable filtration performance under continuous load
• Energy-efficient design for long-term use

Custom Manufacturing Options

The 75 m³ model is part of CrawTec’s standard product range. Filters with alternative capacities, dimensions, or connection layouts can be custom designed and manufactured to meet specific project requirements, from small farms to large industrial aquaculture complexes.

150 m³ Drum Filter for Closed Water and Aquaculture Systems

The 150 m³ drum filter is a high-capacity mechanical filtration solution designed for modern recirculating and closed water systems. It effectively removes fine suspended solids and organic contaminants, helping to maintain stable water quality and optimal conditions for fish, shrimp, and other aquatic species.

The filter housing is manufactured from 12 mm thick food-grade polypropylene, providing excellent resistance to moisture, chemicals, and mechanical stress. Inside the unit, a large rotating drum equipped with a stainless steel filtration screen ensures reliable and continuous removal of impurities without interrupting system operation.

Filtration Process and Design

Water enters the filter through multiple inlet connections and passes evenly through the drum screen with a filtration fineness of 63 microns. Solid particles are retained on the screen surface, while purified water exits through the outlet connections. When contamination reaches a preset level, integrated sensors activate the automatic flushing cycle.

During flushing, the drum rotates and a powerful pump directs water jets onto the screen, washing accumulated debris into the drain. This fully automated process eliminates the need for constant operator supervision and ensures uninterrupted filtration.

Technical Features

• Filtration capacity: up to 150 m³
• Drum size: 750 × 1200 mm
• Filtration rating: 63 microns, stainless steel mesh
• Housing material: food-grade polypropylene, 12 mm thickness
• Drive system: 250 W gearmotor for continuous operation

• Inlet connections: 4 × 110 mm and 2 × 160 mm
• Outlet connections: matching inlet configuration
• Automatic self-cleaning with integrated flushing pump
• Gravity-based installation for easy system integration

Applications and Customisation

This 150 m³ drum filter is suitable for large fish farms, aquaculture facilities, water treatment plants, and ornamental or technical ponds where high filtration capacity and reliability are required. The robust construction and automated operation make it ideal for continuous industrial use.

The model represents one of several available configurations. Custom drum filters with different dimensions, capacities, and connection layouts can be designed and manufactured to meet specific project requirements.

CrawTec DF100 Drum Filter for High-Volume Aquaculture Systems

The CrawTec DF100 drum filter is a high-capacity mechanical filtration unit designed for large industrial aquaculture operations. It is widely used in shrimp, fish, and crayfish farming, where stable water quality and continuous solid removal are critical for productivity and animal health.

The filtration process is based on a rotating drum equipped with a fine stainless steel screen that captures suspended solids and organic residues. An automatic washing system activates when the screen becomes loaded, ensuring uninterrupted filtration without manual intervention.

Technical Specifications

• Filtration capacity: up to 100 m³
• Drum size: 650 × 1200 mm
• Filtration rating: 63 microns
• Overall dimensions: 1300 × 800 × 900 mm
• Housing material: corrosion-resistant polypropylene

• Inlet connections: 5 × 110 mm
• Outlet connections: 5 × 110 mm
• Waste outlet: 1 × 110 mm
• Installation type: gravity-fed
• Automatic washing pump: included

Applications and Operational Benefits

The DF100 drum filter is designed for intensive industrial aquaculture systems requiring high filtration capacity and stable performance. Gravity-based installation allows seamless integration into existing RAS and flow-through systems.

• Efficient removal of fine solids and organic contaminants
• Automatic self-cleaning minimizes maintenance and downtime
• Durable construction for long-term industrial operation
• Low energy consumption reduces overall operating costs

DF50 Drum Filter for Large-Scale Aquaculture and RAS

The CrawTec DF50 drum filter is a high-capacity mechanical filtration unit designed for industrial aquaculture systems with increased water flow requirements. It is widely used in shrimp, fish, and crayfish farming to maintain stable water quality by continuously removing suspended solids and organic residues.

The filter operates on a gravity-fed principle and is equipped with a rotating drum fitted with a fine filtration screen. As solid particles accumulate on the drum surface, the automatic washing system activates, ensuring uninterrupted filtration and reducing the need for manual cleaning.

Technical Specifications

• Filtration capacity: up to 50 m³
• Drum size: 650 × 500 mm
• Filtration rating: 63 microns
• Overall dimensions: 800 × 750 × 800 mm
• Housing material: corrosion-resistant polypropylene

• Inlet connections: 3 × 110 mm
• Outlet connections: 3 × 110 mm
• Waste outlet: 1 × 110 mm
• Installation type: gravity-fed
• Automatic washing pump: included

Applications and Operational Benefits

The DF50 drum filter is suitable for shrimp, fish, and crayfish farms, as well as for industrial water treatment systems where reliable mechanical filtration is essential. Its gravity installation allows easy integration into existing RAS and flow-through systems without complex modifications.

• High filtration performance for large water volumes
• Automatic self-cleaning with minimal operator involvement
• Low energy consumption due to efficient drum rotation
• Durable construction for continuous industrial operation

Drum Filter DF30 for RAS and Aquaculture Systems (30 m³)

The CrawTec DF30 drum filter is a modern mechanical filtration solution designed for industrial aquaculture and recirculating aquaculture systems (RAS). It is suitable for shrimp, fish, and crayfish farming, providing stable removal of suspended solids and organic waste to maintain consistent water quality.

The filtration process is based on a rotating drum equipped with a fine mesh screen that captures mechanical impurities before they re-enter the system. Automatic flushing activates when the screen becomes clogged, ensuring continuous operation without the need for constant manual intervention.

Technical Specifications

• Filtration capacity: up to 30 m³
• Drum size: 500 × 550 mm
• Filtration rating: 63 microns
• Overall dimensions: 800 × 620 × 630 mm
• Housing material: corrosion-resistant polypropylene

• Inlet connections: 2 × 110 mm
• Outlet connections: 2 × 110 mm
• Waste outlet: 1 × 100 mm
• Installation type: gravity-fed
• Automatic flushing pump: included

Applications and Operational Benefits

The DF30 drum filter is used in shrimp, fish, and crayfish farming systems, as well as in industrial water treatment applications where reliable mechanical filtration is required. Gravity-based installation allows easy integration into existing RAS infrastructure.

• Efficient removal of fine solids and organic particles
• Automatic self-cleaning reduces maintenance time
• Low energy consumption during drum operation
• Durable construction for long-term industrial use

Drum Filter for Ponds and Aquaculture Systems (10–15 m³)

This drum filter is designed for reliable mechanical water filtration in ponds and closed-circuit water systems used for fish, shrimp, and crayfish farming. With a throughput capacity of 10–15 m³, it ensures stable water quality by continuously removing suspended solids without the need for constant manual intervention.

The system uses a stainless steel filtration mesh with a fineness of 63 microns to capture mechanical impurities. As the filter screen becomes loaded, an automatic cleaning cycle is activated, allowing the unit to operate continuously while maintaining consistent filtration performance.

Operating Principle

Water enters the filter through the inlet connection and passes over the rotating drum covered with a fine stainless steel mesh. Solid particles remain on the screen, while clean water exits through the outlet. When contamination reaches a preset level, automation initiates drum rotation and activates the rinsing pump, flushing collected waste directly to the drain.

Technical Features and Advantages

• Throughput capacity of 10–15 m³ for small aquaculture systems and ponds
• Compact dimensions of 560 × 500 × 560 mm for easy integration
• Food-grade polypropylene housing (8 mm) resistant to moisture and chemicals
• Stainless steel filter mesh with 63-micron filtration accuracy

• Two inlet and two outlet connections (110 mm and 50 mm)
• 40 W gearmotor for smooth and energy-efficient drum rotation
• Integrated rinsing pump for fast and effective automatic cleaning

Applications and Maintenance

This drum filter is suitable for closed-circuit water systems, industrial and ornamental ponds, fish farms, and aquaculture projects involving Australian crayfish or giant freshwater shrimp. Automatic cleaning significantly reduces maintenance requirements, limiting routine work to periodic inspection of the drum and waste discharge line.

The model is part of a standard product range, but customised versions with different capacities and dimensions can be manufactured to meet specific project requirements.

200 m³ Drum Filter for Industrial Aquaculture Systems

The CrawTec 200 m³ drum filter is a high-capacity mechanical filtration solution designed for large fish and shrimp farms operating with recirculating aquaculture systems. It provides continuous removal of suspended solids and mechanical contaminants without the need for constant operator supervision.

Water enters the filter through multiple inlet connections and is evenly distributed across two filtration drums. Fine particles are retained by a stainless steel mesh, ensuring stable water clarity and reliable system performance even under high hydraulic loads.

Filtration Process and Design

The filtration system is based on two rotating drums equipped with 63-micron stainless steel screens. When the level of contamination increases, the automated control system activates the cleaning cycle. Gearmotors rotate the drums while an integrated high-pressure flushing pump removes accumulated sludge without interrupting filtration.

Technical Specifications

• Throughput capacity: up to 200 m³
• Double drum size: 650 × 1000 mm
• Filtration fineness: 63 microns (stainless steel mesh)
• Overall dimensions: 1300 × 1500 × 900 mm
• Housing material: food-grade polypropylene, 12 mm thickness

• Inlet connections: 10 × 110 mm
• Outlet connections: 10 × 110 mm
• Gearmotors: 2 × 150 W for synchronized drum rotation
• Automatic rinsing system with integrated flushing pump

Applications, Automation, and Customisation

The CrawTec 200 m³ drum filter is used in large-scale fish and shrimp farms, sturgeon, trout, carp, and crayfish production systems, as well as in industrial aquaculture facilities requiring high filtration capacity. It is also suitable for large aquariums and ornamental ponds with significant water volumes.

Advanced level sensors and intelligent automation allow the filter to operate continuously without manual control, reducing labor costs and improving system stability. In addition to the standard configuration, CrawTec offers custom-designed drum filters with adjusted capacity, dimensions, and layout to meet specific project requirements.

Product Description

The CrawTec DF20 drum filter is a mechanical filtration unit designed for continuous water treatment in industrial aquaculture systems. It is used in shrimp, fish, and crayfish farming to remove suspended solids and organic particles, supporting stable water quality and healthy growing conditions.

Filtration is performed by a rotating drum with a fine mesh screen that traps contaminants before they circulate back into the system. An automatic flushing system cleans the drum surface during operation, allowing uninterrupted filtration with minimal manual maintenance.

Technical Specifications

• Filtration capacity: up to 20 m³
• Drum size: 500 × 450 mm
• Filtration rating: 63 microns
• Overall dimensions: 634 × 586 × 620 mm
• Material: corrosion-resistant polypropylene

• Inlet connections: 2 × 110 mm
• Outlet connections: 2 × 110 mm
• Waste outlet: 1 × 110 mm
• Installation type: gravity-fed
• Automatic flushing pump: included

Applications and Advantages

The DF20 drum filter is suitable for use in shrimp, fish, and crayfish farms, as well as in industrial water treatment systems where reliable mechanical filtration is required. Gravity installation allows easy integration into existing RAS and flow-through setups.

• Efficient removal of fine solids and organic waste
• Automatic self-cleaning reduces maintenance effort
• Low energy consumption during operation
• Durable construction for long-term industrial use