1. Recirculating Aquaculture Systems (RAS)
Core Challenges: Rapid toxin accumulation (ammonia/nitrite), dissolved oxygen (DO) fluctuation, high energy costs.
Critical Parameters & Ranges
Parameter | Safe Range | Danger Threshold |
|---|---|---|
Dissolved Oxygen | 6-8 mg/L | <4 mg/L (asphyxiation) |
Ammonia | 0-0.5 mg/L | >1 mg/L (toxic) |
Nitrite | 0-0.1 mg/L | >0.3 mg/L (lethal) |
Temperature | Species-specific (±1°C) | >2°C variation (stress) |
Sensor Package
Essential:
Multi-parameter probe (DO/pH/ammonia/temperature, ±0.1°C accuracy)
Turbidity sensor (0-1000 NTU range, ±2% precision)
ORP sensor (>250 mV for organic load warning)
Optional: Nitrate sensor (eutrophication prevention)
System Integration
Mechanical filtration: Drum filter (>90% solids removal)
Biofiltration: MBBR media + ozone generator (95% ammonia conversion)
Value Proposition: Expect to be 30% mortality reduction + 25% energy savings through automated toxin control.
2. Pond Culture
Core Challenges: Algal blooms, diurnal DO swings (>4 mg/L fluctuation), post-rain turbidity.
Critical Parameters
Parameter | Safe Range | Risk Scenario |
|---|---|---|
DO | 5-7 mg/L | <3 mg/L (surface gasping) |
pH | 7.5-8.5 | >9.0 (algal overgrowth) |
Turbidity | <20 NTU | >50 NTU (hypoxia) |
Sensor Package
Optical DO sensor (anti-algae coating, ±0.2 mg/L)
pH electrode (salt-resistant, ±0.1 accuracy)
Infrared turbidimeter (storm-proof operation)
Solution: Around 15% better FCR + 60% fewer algal blooms via real-time DO/pH stabilization.
3. Net Pen Farming
Core Challenges: Vertical DO stratification, disease transmission, biofouling.
Critical Parameters
Parameter | Safe Range | Risk Threshold |
|---|---|---|
DO | >5 mg/L | <3 mg/L (lethal) |
Salinity | Species-specific (±2‰) | >5‰ fluctuation (osmotic shock) |
Sensor Package
Depth-stratified DO sensors (surface/mid/bottom)
Self-cleaning conductivity sensor (±1% accuracy)
Value: Around 40% more uniform oxygenation + 35% lower disease incidence.
4. Cold-Water Fish Farming
Core Challenges: Thermal stress (>18°C), slow nitrification at low temps.
Critical Parameters
Parameter | Safe Range | Danger Threshold |
|---|---|---|
Temperature | 10-15°C | >18°C (metabolic disorder) |
Nitrate | <50 mg/L | >100 mg/L |
Sensor Package
Cryogenic DO sensor (no electrolyte freezing)
Ammonia/nitrate duplex probe
Outcome: About 25% higher winter survival with ±0.3°C precision.
5. Ornamental Fish Culture
Core Challenges: Chlorine poisoning, chloride imbalance.
Critical Parameters
Parameter | Safe Range | Danger Level |
|---|---|---|
Chlorine | 0 mg/L | >0.02 mg/L (fatal) |
Sensor Package
Electrochemical chlorine sensor (0.01 mg/L detection)
Ion-selective chloride electrode
Result: Around 90% mortality reduction in high-value species.
6. Hatchery Operations
Core Challenges: Larval stress, imprecise feeding.
Critical Parameters
Parameter | Safe Range | Risk Threshold |
|---|---|---|
DO | >6 mg/L | <5 mg/L (stunted growth) |
Salinity | Species-specific (±0.5‰) | >2‰ variation (fatal) |
Sensor Package
Micro-scale DO sensor (±0.1 mg/L)
Temperature-compensated salinometer
Benefit: Around 85% survival rate + 30% feed cost savings.