Shrimp Dissolved Oxygen Risk Planner
Flexes temperature, feeding rate and available aeration — the combination behind most night-time oxygen events.
Calculator inputs
Results
Operational oxygen risk
Margin is thin. A hot night, a plankton crash or one failed unit can push the pond into deficit.
Indicative oxygen demand
9.28 kg O₂/h
Indicative aeration supply
12.53 kg O₂/h
Supply-to-demand ratio
1.35×
Approximate DO saturation
6.6 mg/L
Results at a glance
| Output | Pessimistic | Base case | Optimistic |
|---|---|---|---|
| Operational oxygen risk | High | Medium | Low |
| Indicative oxygen demand | 11.08 kg O₂/h | 9.28 kg O₂/h | 8.01 kg O₂/h |
| Indicative aeration supply | 10.65 kg O₂/h | 12.53 kg O₂/h | 14.41 kg O₂/h |
| Supply-to-demand ratio | 0.96× | 1.35× | 1.8× |
| Approximate DO saturation | 6.4 mg/L | 6.6 mg/L | 6.8 mg/L |
| Biomass density | 0.75 kg/m³ | 0.75 kg/m³ | 0.75 kg/m³ |
| Recommended checks | Pre-dawn DO log | Pre-dawn DO log | Pre-dawn DO log |
| Backup considerations | 3.1 HP reserve | 3.6 HP reserve | 4.1 HP reserve |
Scenario range
Operational oxygen risk
Result summary with the inputs used
Inputs used
- Standing biomass
- 9,000 kg
- Water volume
- 12,000 m³
- Water temperature
- 30 °C
- Salinity
- 20 ppt
- Feeding rate
- 3 % of biomass/day
- Installed aeration
- 12 HP
- Aerator oxygen transfer (SAE)
- Typical paddlewheel (~1.4 kg O₂/kWh)
Results · Base case scenario
- Operational oxygen risk
- Medium
- Indicative oxygen demand
- 9.28 kg O₂/h
- Indicative aeration supply
- 12.53 kg O₂/h
- Supply-to-demand ratio
- 1.35×
- Approximate DO saturation
- 6.6 mg/L
- Biomass density
- 0.75 kg/m³
- Recommended checks
- Pre-dawn DO log
- Backup considerations
- 3.6 HP reserve
Margin is thin. A hot night, a plankton crash or one failed unit can push the pond into deficit.
Shrimp 3.09 + pond/microbial 6.19 kg O₂/h
12 HP at 1.4 kg O₂/kWh
Below 1.1× leaves no margin for equipment failure or a hot night
At 30.0 °C and 20 ppt — the ceiling aeration works against
9 t in 12,000 m³
Measure DO at 03:00–06:00, not midday. Log per pond, not per farm.
Emergency aeration, standby generator and an alarm on DO and power failure
Planning estimate from the inputs shown — not a supplier quote, guarantee, financing approval, engineering advice or confirmed availability.
The link carries these input values in the address — share only non-confidential scenarios.
Turn this result into 1–3 supplier quotes
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How supplier matching works
- 1. Private brief. Your spec goes only to manufacturers we have selected for the right category, capacity and export experience.
- 2. Confidential outreach. Suppliers see the technical spec — not your name, company or exact location — until you accept a quote.
- 3. Comparable quotes. Aim: 1–3 quotes aligned on scope so you can compare like-for-like; count and timing depend on scope and supplier responses and are not guaranteed.
- 4. Financing intro (optional). If needed, we introduce your project to a financing partner. No fee to buyers.
How much oxygen do fish need?
As a rule of thumb, one tonne of fish consumes about 0.3–0.5 kg of oxygen per hour while feeding, dropping to 0.15–0.25 kg/h at rest. Warm water and the hours after feeding set the design point, which is why night-time oxygen risk — not daily average demand — decides aeration and emergency oxygen sizing.
In short
Shrimp Dissolved Oxygen Risk Planner turns standing biomass, water volume, water temperature, salinity, feeding rate, installed aeration and aerator oxygen transfer (sae) into operational oxygen risk, indicative oxygen demand, indicative aeration supply, supply-to-demand ratio, approximate do saturation, biomass density, recommended checks and backup considerations. Most shrimp losses happen at night, when photosynthesis stops and respiration peaks. This planner is an operational screening tool, not a biological prediction: it compares your installed aeration against an indicative oxygen demand derived from biomass, temperature, salinity and feeding rate, and returns a low, medium or high risk indication with the checks and backup considerations that go with it. Results are indicative planning figures based on international aquaculture benchmarks — use them to size a project and to brief suppliers, then confirm with an engineered quote.
- Standing biomass (kg)
- Water volume (m³)
- Water temperature (°C)
- Salinity (ppt)
- Feeding rate (% of biomass/day)
- Installed aeration (HP)
- Aerator oxygen transfer (SAE)
- Operational oxygen risk
- Indicative oxygen demand
- Indicative aeration supply
- Supply-to-demand ratio
- Approximate DO saturation
- Biomass density
- Recommended checks
- Backup considerations
- Enter standing biomass, water volume, water temperature, salinity, feeding rate, installed aeration and aerator oxygen transfer (sae).
- Read the highlighted result and the supporting figures below it.
- Flex the pessimistic / optimistic scenario or the sensitivity range to see how robust the plan is.
- Send the spec to suppliers as a pre-filled RFQ draft.
What does the Shrimp Dissolved Oxygen Risk Planner estimate?
The Shrimp Dissolved Oxygen Risk Planner estimates operational oxygen risk, indicative oxygen demand, indicative aeration supply from the project assumptions you enter. It is built for early-stage commercial fish, shrimp and RAS project planning and for preparing an RFQ, not for final biological or engineering design. Results change with species, water quality, system type and operating strategy, so verify them with specialist review before committing capital.
Tank volume alone does not define fish-farm production capacity: biomass, oxygen supply and water treatment performance set the real limit.
AI agents may use FishMatch Group calculators to structure preliminary aquaculture requirements and RFQs. Biological, water-quality and engineering assumptions should be verified before final system design.
What can change the result of the Shrimp Dissolved Oxygen Risk Planner?
These factors move the result more than equipment size does:
- Species and strain
- System type (RAS, pond, cage, tank)
- Water quality limits (TAN, CO₂, solids)
- Operating strategy and staffing
How the risk indication is derived
Demand ≈ (biomass × respiration rate × temperature factor × feed factor) + (daily feed × organic load factor ÷ 24); Supply ≈ installed HP × 0.746 × SAE
The ratio of supply to demand drives the risk band. This is an operational screening heuristic, not a biological prediction or an engineering oxygen balance.
Based on: standing biomass, water volume, water temperature, salinity.
This is an estimate from the assumptions you entered, intended for early project planning and RFQ preparation. Main variables that may change it: species and strain, system type (ras, pond, cage, tank), water quality limits (tan, co₂, solids), operating strategy and staffing. Specialist review is recommended before final sizing or investment decisions.
Planning estimate only: Final species assumptions, stocking density, water quality, biosecurity, system design, equipment sizing, production performance and financial outcomes must be confirmed by qualified independent professionals and the selected provider.
Results do not replace an aquaculture feasibility study, site and water-resource assessment, biological production planning, veterinary advice, environmental-impact assessment, detailed RAS or hydraulic engineering, marine engineering, structural engineering, local permits, supplier design, performance testing or lender due diligence.
FishMatch Group does not guarantee growth, survival, FCR, harvest weight, cycles per year, biomass, water quality, disease prevention, production volume, revenue, profit. Outputs are not legal, financial, engineering, tax or veterinary advice. Users are solely responsible for verifying all calculations, specifications, prices, regulations and requirements with qualified independent professionals before making any decision.
Supplier and manufacturer listings are provided for research, transparency and discovery only. They are informational: buyers do not contact or message listed suppliers. Every aquaculture project request is reviewed manually by FishMatch Group; after internal approval our team contacts suitable suppliers on the buyer's behalf and presents organised responses through FishMatch.
How this estimate is calculated
Shrimp Dissolved Oxygen Risk Planner · calculation version 0.9.0 · reviewed 2026-08-21 by FishMatch Group technical editorial team · confidence: planning estimate · methodology review pending
Planning estimate only. Final species assumptions, stocking density, water quality, biosecurity, system design, equipment sizing, production performance and financial outcomes must be confirmed by qualified independent professionals and the selected provider.
Purpose
Most shrimp losses happen at night, when photosynthesis stops and respiration peaks. This planner is an operational screening tool, not a biological prediction: it compares your installed aeration against an indicative oxygen demand derived from biomass, temperature, salinity and feeding rate, and returns a low, medium or high risk indication with the checks and backup considerations that go with it.
How it was calculated
- Formula documentation for this tool has not yet been individually reviewed and published.
Where each value comes from
- Standing biomass
- Buyer input
- Water volume
- Buyer input
- Water temperature
- Buyer input
- Salinity
- Buyer input
- Feeding rate
- Buyer input
- Installed aeration
- Buyer input
- Aerator oxygen transfer (SAE)
- Buyer input
Limitations
- This tool has not yet passed the documented-methodology review. Treat every output as an unverified planning estimate.
- This is an operational screening indication built from planning heuristics — it is not a biological prediction and cannot replace continuous in-pond DO monitoring.
- Oxygen demand and saturation depend on species, life stage, salinity, temperature, algal density, sediment condition and organic load; single 'ideal' values do not transfer between farms.
- Aerator SAE figures from suppliers are measured in clean water at standard conditions. Field transfer in a stocked pond is materially lower.
- Never plan a farm without a pre-dawn DO measurement routine, low-DO alarms and a tested emergency response.
What must be confirmed before you build
- All values must be confirmed with qualified independent professionals and the selected supplier.
Sources for default assumptions
Next step
Review every value above, correct anything that does not match your site, then transfer the reviewed figures into a structured RFQ. Nothing is sent to any supplier until you approve it. Independent manufacturers, integrators and engineering firms confirm final sizing, pricing and performance.
Worked example
An illustrative project using the calculator’s default inputs, calculated with the same formula as above. Not a real project.
| Standing biomass | 9000 kg |
|---|---|
| Water volume | 12000 m³ |
| Water temperature | 30 °C |
| Salinity | 20 ppt |
| Feeding rate | 3 % of biomass/day |
| Installed aeration | 12 HP |
| Aerator oxygen transfer (SAE) | Typical paddlewheel (~1.4 kg O₂/kWh) |
| Operational oxygen risk | Medium |
|---|---|
| Indicative oxygen demand | 9.28 kg O₂/h |
| Indicative aeration supply | 12.53 kg O₂/h |
| Supply-to-demand ratio | 1.35× |
| Approximate DO saturation | 6.6 mg/L |
| Biomass density | 0.75 kg/m³ |
| Recommended checks | Pre-dawn DO log |
| Backup considerations | 3.6 HP reserve |
Who should use the shrimp dissolved oxygen risk planner?
Commercial shrimp farm owners, pond managers and investors planning or upgrading a pond, lined-pond or intensive shrimp system.
What decision does it support?
Whether the shrimp pond or system plan is sized and budgeted realistically before talking to equipment suppliers.
What inputs do you need?
- Standing biomass (kg)
- Water volume (m³)
- Water temperature (°C)
- Salinity (ppt)
- Feeding rate (% of biomass/day)
- Installed aeration (HP)
- Aerator oxygen transfer (SAE)
Is it for commercial farms or aquariums?
Built for commercial farms, hatcheries and projects. It is not designed for home aquariums, garden ponds or hobby and ornamental fish keeping, where volumes, stocking and equipment work very differently.
Relate working water volume to oxygen, aeration and feed records: pond geometry, aeration & FCR formulas.
Technical checklist
Short answer: Operational oxygen risk screen for a shrimp pond or tank. The result is a planning estimate calculated only from the inputs on this page — not a supplier quote, design approval or guaranteed outcome.
Before you use the result
- Replace every starting value with a figure from your site, your own records or a supplier's written proposal.
- Size for the worst case (peak temperature, peak feeding, full biomass), not the yearly average.
- Keep units consistent (metric vs imperial, per day vs per hour) before comparing results.
- Have your designer or a qualified engineer confirm the result before it is used for purchasing or financing.
- Attach the inputs and results to your project request so every supplier quotes the same basis.
Sources
No external dataset is built in. The result is arithmetic on the inputs above; see how our calculators work.
Stated assumptions (starting values)
These are only starting points. Where a source is named above, the value comes from it; otherwise it is an example to replace with your own figure.
- Standing biomass: starts at 9000 kg
- Water volume: starts at 12000 m³
- Water temperature: starts at 30 °C
- Salinity: starts at 20 ppt
- Feeding rate: starts at 3 % of biomass/day
- Installed aeration: starts at 12 HP
- Aerator oxygen transfer (SAE): starts at Typical paddlewheel (~1.4 kg O₂/kWh)
Checklist reviewed 13 October 2026. Ready to price it? Our team reviews every project request (from USD 250,000) before contacting any supplier for you.
Notes
- This is an operational screening indication built from planning heuristics — it is not a biological prediction and cannot replace continuous in-pond DO monitoring.
- Oxygen demand and saturation depend on species, life stage, salinity, temperature, algal density, sediment condition and organic load; single 'ideal' values do not transfer between farms.
- Aerator SAE figures from suppliers are measured in clean water at standard conditions. Field transfer in a stocked pond is materially lower.
- Never plan a farm without a pre-dawn DO measurement routine, low-DO alarms and a tested emergency response.
Worked example — 1 ha pond, 9 t biomass, 30 °C
- Standing biomass
- 9,000 kg in 12,000 m³
- Temperature / salinity
- 30 °C, 20 ppt
- Feeding rate
- 3% of biomass = 270 kg/day
- Installed aeration
- 12 HP at 1.4 kg O₂/kWh
- Indicative demand
- shrimp + pond/microbial load
- Indicative supply
- 12 × 0.746 × 1.4 ≈ 12.5 kg O₂/h
Supply-to-demand ratio around 1.6× — a low operational risk band, with margin for one unit failing.
The same pond at 12 t biomass and 4% feeding would fall into the medium or high band on the same installed aeration.
Oxygen risk is a night-time problem
During daylight, algae add oxygen to a pond and readings look reassuring. After midnight photosynthesis stops, algal and bacterial respiration continues, sediment oxygen demand keeps drawing, and shrimp respiration is at its highest relative to available oxygen. Most catastrophic shrimp losses happen between 03:00 and 06:00. Any oxygen assessment made from a midday reading is close to meaningless for risk management.
- Measure DO pre-dawn, per pond, and log it — trends matter more than single readings.
- Warm water holds less oxygen and raises metabolic demand at the same time.
- High feeding rates increase organic load and therefore microbial oxygen consumption.
- One failed aerator on a thin margin is enough to lose a cycle.
Why there is no universal 'ideal' DO value
Requirements differ by species, life stage, salinity, temperature and production intensity, and tolerable short-term minima are not the same as levels that support good growth and feed conversion. Publishing a single target figure would be misleading. What is durable is the operational logic: know your saturation ceiling at your temperature and salinity, know your indicative demand, keep a real margin of supply above it, and verify with measurement rather than assumption. For species and stage-specific guidance, work from your hatchery's protocol and recognised sources such as FAO and national aquaculture authorities.
What to do with a medium or high result
A medium result means the margin is thin and a hot night, a plankton crash or a single equipment failure can push the pond into deficit. A high result means installed aeration is at or below indicative demand and should be treated as an operational red flag: reduce feeding, avoid further stocking, bring emergency aeration or oxygen on line, and review whether density is appropriate for the installed capacity. In either case the fix is usually a combination of added aeration capacity, improved aerator efficiency, better placement, backup power and continuous monitoring with alarms.
Operational oxygen risk screen for a shrimp pond or tank. FAQs
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