Hatchery & Nursery RAS
Ultra-stable RAS environments for hatchery, larval rearing, and nursery phases where water quality stability directly impacts survival rates.
Suitable For
- Species: Marine finfish larvae, Shrimp postlarvae, Fingerlings
- Regions: Global
- Customers: Hatcheries, Research institutions, Integrated aquaculture groups
Main Challenges
- •High sensitivity to ammonia and CO2 fluctuations
- •Inconsistent larval survival between batches
- •Limited redundancy in small-scale systems
- •Complex disinfection requirements between batches
Recommended System Logic
Hatchery RAS prioritizes low hydraulic retention time in critical loops, fine filtration, stable temperature control, precise oxygen delivery without supersaturation risk, and batch-to-batch disinfection protocols integrated with automation interlocks.
Key Modules Included
Mechanical Filtration
High-capacity drum and micro-screen filtration for reliable solids removal in commercial RAS loops.
Biofiltration
Moving bed and fixed film biofilters engineered for ammonia and nitrite control under commercial feed loading.
Oxygenation
High-efficiency oxygen cones, diffusers, and injection systems for commercial stocking densities.
UV / Ozone Disinfection
UV and ozone systems for pathogen control and biosecurity in commercial RAS loops.
Automation & Monitoring
PLC/SCADA panels, sensor networks, and alarm logic for reliable commercial RAS operation.
RAS Process Diagram
Water Recirculation
Continuous movement of water from tanks to treatment systems.
Mechanical Filtration
Removal of solid waste and uneaten feed particles.
Biofiltration
Biological conversion of toxic ammonia to less harmful nitrates.
Degassing
Stripping out excess carbon dioxide (CO2) from the water.
Oxygenation
Dissolving pure oxygen to support high stocking densities.
Disinfection
UV or Ozone treatment to eliminate pathogens.
Temperature Control
Maintaining optimal thermal conditions for specific species.
Monitoring & Return
Automated parameter checks before returning clean water to tanks.
Water Recirculation
Continuous movement of water from tanks to treatment systems.
Mechanical Filtration
Removal of solid waste and uneaten feed particles.
Biofiltration
Biological conversion of toxic ammonia to less harmful nitrates.
Degassing
Stripping out excess carbon dioxide (CO2) from the water.
Oxygenation
Dissolving pure oxygen to support high stocking densities.
Disinfection
UV or Ozone treatment to eliminate pathogens.
Temperature Control
Maintaining optimal thermal conditions for specific species.
Monitoring & Return
Automated parameter checks before returning clean water to tanks.
Typical Project Scope
Includes nursery loop design, backup oxygen strategy, water preparation systems, quarantine/discharge planning, automation for critical parameters, and operator training for batch management.
Responsibility Matrix
TurnkeyRAS Scope
- •Hatchery RAS engineering
- •Module supply
- •Automation
- •Commissioning and SOPs
Client Scope
- •Broodstock programs
- •Live feed production
- •Facility construction
Local Partner Scope
- •Local MEP installation
Case Reference
Hatchery & Nursery Project Story
Inconsistent larval survival and unstable water quality during nursery phases affected production planning. Existing equipment was fragmented with limited automation.
TurnkeyRAS upgraded the treatment loop with refined mechanical filtration, expanded biofiltration capacity, precision oxygenation with supersaturation safeguards, and ozonation with ORP-controlled dosing.
Frequently Asked Questions
Get a Custom Solution
Share your species, capacity, and location for a preliminary system recommendation.