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Aquaculture Water Treatment Calculator

Water treatment duty on a fish or shrimp farm is set by the flow you must treat per hour, the solids load the mechanical stage removes and the disinfection dose the incoming or recirculated water needs. Size those three here so every supplier quotes the same duty point.
Aquaculture Water Treatment Calculator — Pumps, filters and UV sterilizer in an aquaculture water treatment room

Flexes solids load, water clarity and turnover — the variables that most change treatment equipment size.

Calculator inputs

RAS 0.7–1.5/h; flow-through and pond recirculation are lower.

Drum filter 60–90% depending on micron rating.

30–40 general; 100+ for virus control in biosecure hatcheries.

Results

Treatment flow required

2,000 m³/hr

2000 m³ at 1 turnovers/hour

Daily make-up water

200 m³/day

Solids removed

0.8 kg/day

UV lamp power (indicative)

6.7 kW

Make-up water heating (per 10 °C)

0.1 kW

Results at a glance

OutputPessimisticBase caseOptimistic
Treatment flow required2,400 m³/hr2,000 m³/hr2,000 m³/hr
Daily make-up water200 m³/day200 m³/day140 m³/day
Solids removed1.6 kg/day0.8 kg/day0.7 kg/day
UV lamp power (indicative)9.4 kW6.7 kW6.7 kW
Make-up water heating (per 10 °C)0.1 kW0.1 kW0.1 kW

Scenario range

Treatment flow required

PessimisticBaseOptimistic

Result summary with the inputs used

Inputs used

System / pond water volume
2,000 m³
Turnover rate
1 times/hour
Daily make-up water
10 % of volume/day
Incoming suspended solids
25 mg/L
Mechanical removal efficiency
70 %
UV dose target
40 mJ/cm²
UV transmittance
85 %

Results · Base case scenario

Treatment flow required
2,000 m³/hr

2000 m³ at 1 turnovers/hour

Daily make-up water
200 m³/day

10% of system volume — sets intake, pumping and heating duty

Solids removed
0.8 kg/day

≈ 0.08 m³/day backwash slurry at ~1% dry solids

UV lamp power (indicative)
6.7 kW

40 mJ/cm² at 85% UVT — confirm against validated reactor curves

Make-up water heating (per 10 °C)
0.1 kW

Continuous thermal load if intake water is 10 °C below setpoint

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.

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In short

Aquaculture Water Treatment Calculator turns system / pond water volume, turnover rate, daily make-up water, incoming suspended solids, mechanical removal efficiency, uv dose target and uv transmittance into treatment flow required, daily make-up water, solids removed, uv lamp power (indicative) and make-up water heating (per 10 °c). Water treatment duty on a fish or shrimp farm is set by the flow you must treat per hour, the solids load the mechanical stage removes and the disinfection dose the incoming or recirculated water needs. Size those three here so every supplier quotes the same duty point. 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.

What you enter
  • System / pond water volume (m³)
  • Turnover rate (times/hour) — RAS 0.7–1.5/h; flow-through and pond recirculation are lower.
  • Daily make-up water (% of volume/day)
  • Incoming suspended solids (mg/L)
  • Mechanical removal efficiency (%) — Drum filter 60–90% depending on micron rating.
  • UV dose target (mJ/cm²) — 30–40 general; 100+ for virus control in biosecure hatcheries.
  • UV transmittance (%)
What you get back
  • Treatment flow required
  • Daily make-up water
  • Solids removed
  • UV lamp power (indicative)
  • Make-up water heating (per 10 °C)
How to use it
  1. Enter system / pond water volume, turnover rate, daily make-up water, incoming suspended solids, mechanical removal efficiency, uv dose target and uv transmittance.
  2. Read the highlighted result and the supporting figures below it.
  3. Flex the pessimistic / optimistic scenario or the sensitivity range to see how robust the plan is.
  4. Send the spec to suppliers as a pre-filled RFQ draft.

What does the Aquaculture Water Treatment Calculator estimate?

The Aquaculture Water Treatment Calculator estimates treatment flow required, daily make-up water, solids removed 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 Aquaculture Water Treatment Calculator?

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
Preliminary planning result

Based on: system / pond water volume, turnover rate, daily make-up water, incoming suspended solids.

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

Aquaculture Water Treatment Calculator · 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

Water treatment duty on a fish or shrimp farm is set by the flow you must treat per hour, the solids load the mechanical stage removes and the disinfection dose the incoming or recirculated water needs. Size those three here so every supplier quotes the same duty point.

How it was calculated

  • Formula documentation for this tool has not yet been individually reviewed and published.

Where each value comes from

System / pond water volume
Buyer input
Turnover rate
Buyer input
Daily make-up water
Buyer input
Incoming suspended solids
Buyer input
Mechanical removal efficiency
Buyer input
UV dose target
Buyer input
UV transmittance
Buyer input

Limitations

  • This tool has not yet passed the documented-methodology review. Treat every output as an unverified planning estimate.
  • Quote mechanical filtration on micron rating and backwash water use, not just nominal flow — backwash can be 0.2–1% of treated flow.
  • UV sizing must come from the manufacturer's validated dose curve at your actual UVT and flow; the figure above is a planning indication only.
  • Ozone, degassing and pH control are usually specified after a water analysis — include one in your RFQ pack.
  • Outputs are planning-level estimates, not an engineering design or a treatment guarantee.

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.

Inputs
System / pond water volume2000 m³
Turnover rate1 times/hour
Daily make-up water10 % of volume/day
Incoming suspended solids25 mg/L
Mechanical removal efficiency70 %
UV dose target40 mJ/cm²
UV transmittance85 %
Result
Treatment flow required2,000 m³/hr
Daily make-up water200 m³/day
Solids removed0.8 kg/day
UV lamp power (indicative)6.7 kW
Make-up water heating (per 10 °C)0.1 kW
Water and site

Who should use the aquaculture water treatment calculator?

Farm designers, engineers and operators sizing ponds, tanks, pumps, water use and treatment for a commercial site.

What decision does it support?

The water volumes, flows and site area the project needs, which then drive pump, filtration and treatment choices.

What inputs do you need?

  • System / pond water volume (m³)
  • Turnover rate (times/hour)
  • Daily make-up water (% of volume/day)
  • Incoming suspended solids (mg/L)
  • Mechanical removal efficiency (%)
  • UV dose target (mJ/cm²)
  • UV transmittance (%)

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.

Buying questions this water treatment result answers

What water treatment equipment do these numbers imply?

The calculated flow and load usually translate into mechanical filtration such as drum or belt filters, biological filtration sized on daily feed load, degassing or CO2 stripping, oxygenation or aeration, disinfection by UV or ozone, plus pumps, sumps and monitoring probes. Size each stage on peak flow rather than average, and specify materials, redundancy and control logic before requesting supplier pricing.

Continue from this answer

How long do water treatment systems take to procure?

Standard filters, pumps and UV units are often available within four to eight weeks; engineered skids, larger biofilters and integrated control systems commonly run twelve weeks or more, plus freight. Add time for hydraulic design review, civil works and biofilter maturation before full stocking. Ask suppliers to state ex-works readiness, shipping duration and on-site commissioning days separately so your schedule stays realistic.

Continue from this answer

What information belongs in a water treatment RFQ?

State design flow, recirculation rate, daily feed load, target species and temperature, incoming water quality and source, discharge limits, available head and footprint, and power supply. Attach the calculator outputs, then ask for guaranteed treatment performance, energy consumption per cubic metre, spare parts pricing, service coverage in your country, and a clear scope split between supplier, contractor and buyer.

Continue from this answer
RFQ from this calculation

Get water-treatment quotes for this spec

Your flow, load and treatment targets go to water-treatment and RAS suppliers we have screened for your capacity band.

FishMatch Group and the other Global B2B Group platforms are committed to conducting their own activities in accordance with applicable laws and regulations. FishMatch facilitates sourcing and RFQs; it does not manufacture, process, export or sell the listed products and does not grant regulatory approval. Requirements differ by product and by origin, destination and transit country. As buyer or importer, you remain responsible for your own import permissions, local requirements and due diligence. This notice does not change anyone's legal duties and is not legal advice. Regulation & responsibilities
WhatsApp message preview — auto-compiled
RFQ from FishMatch calculator: Aquaculture Water Treatment Calculator

— Requirement —
Species: Tilapia
Treatment scope: Full RAS loop
Timeline: Within 3 months

— Required specs (from my calculation) —
RFQ draft generated from FishMatch calculator: Aquaculture Water Treatment Calculator
Scenario: Base case

Inputs:
• System / pond water volume: 2000 m³
• Turnover rate: 1 times/hour
• Daily make-up water: 10 % of volume/day
• Incoming suspended solids: 25 mg/L
• Mechanical removal efficiency: 70 %
• UV dose target: 40 mJ/cm²
• UV transmittance: 85 %

Calculated outputs:
• Treatment flow required: 2,000 m³/hr (2000 m³ at 1 turnovers/hour)
• Daily make-up water: 200 m³/day (10% of system volume — sets intake, pumping and heating duty)
• Solids removed: 0.8 kg/day (≈ 0.08 m³/day backwash slurry at ~1% dry solids)
• UV lamp power (indicative): 6.7 kW (40 mJ/cm² at 85% UVT — confirm against validated reactor curves)
• Make-up water heating (per 10 °C): 0.1 kW (Continuous thermal load if intake water is 10 °C below setpoint)

Please quote comparable equipment, scope and lead time for the spec above.

Please send 1–3 comparable quotes from screened manufacturers.
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Equipment guides that use this result

Specifications, sizing basis and what to state in a quote request for the equipment this calculator helps size.

Technical checklist

Short answer: Water treatment 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.

  • System / pond water volume: starts at 2000 m³
  • Turnover rate: starts at 1 times/hour
  • Daily make-up water: starts at 10 % of volume/day
  • Incoming suspended solids: starts at 25 mg/L
  • Mechanical removal efficiency: starts at 70 %
  • UV dose target: starts at 40 mJ/cm²
  • UV transmittance: starts at 85 %

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

  • Quote mechanical filtration on micron rating and backwash water use, not just nominal flow — backwash can be 0.2–1% of treated flow.
  • UV sizing must come from the manufacturer's validated dose curve at your actual UVT and flow; the figure above is a planning indication only.
  • Ozone, degassing and pH control are usually specified after a water analysis — include one in your RFQ pack.
  • Outputs are planning-level estimates, not an engineering design or a treatment guarantee.

Water treatment sizing FAQs

Work from daily feed load and system flow. Feed load sets biofilter surface area and oxygen demand, flow sets mechanical filter and pump capacity, and species temperature tolerance sets heating or chilling duty. Size every stage on peak conditions rather than average operation.

Biofilter media is sized on total ammonia nitrogen produced per day, roughly 2.5–3% of daily feed weight, divided by the media's areal conversion rate at your temperature. Cold water reduces conversion sharply, so a Norwegian smolt plant needs far more media than a tropical tilapia farm at the same feed load.

Intensive fish RAS typically turns over tank volume every 30–60 minutes and replaces 3–10% of system volume per day with new water. Higher reuse cuts water and heating cost but raises the requirement for CO2 stripping, denitrification and fine solids removal.

UV is the common default for disinfecting make-up water and recirculating flow. Ozone additionally removes fine solids and colour and improves water clarity but requires contact time, off-gas destruction and careful residual control. Many plants use ozone plus downstream UV.

Pumping, aeration or oxygenation and CO2 stripping dominate the energy bill in recirculating systems. Ask every supplier to state kilowatt-hours per cubic metre treated and per kilogram of fish produced, at your design temperature, so quotes can be compared on operating cost rather than purchase price.

A new biofilter usually needs three to eight weeks to establish nitrifying bacteria, longer in cold water. Plan a staged stocking ramp, monitor ammonia and nitrite daily, and schedule commissioning so maturation happens before your first full stocking, not after.

Provide source water analysis (temperature range, salinity, hardness, iron, manganese, nitrate), design flow, feed load, species and stage, discharge limits, available head and footprint, and power supply. Missing source water data is the single most common cause of non-comparable treatment quotes.

Attach the calculator outputs to an RFQ that fixes the design basis, then request itemised scope, guaranteed performance, energy consumption, spare parts pricing and commissioning days from each supplier. FishMatch runs that process confidentially with matched suppliers.

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Is FishMatch right for your project?

When is FishMatch a good fit for a buyer?

FishMatch can be a fit when a buyer needs structured RFQ intake, aquaculture-specific calculators, project-specific technical information and a clearer procurement path for water treatment and the wider aquaculture project it belongs to. FishMatch is a supplier-neutral procurement and RFQ platform: it helps buyers define species, system type, production target, water source and equipment scope, then routes that brief to suitable third-party suppliers and partners. FishMatch does not manufacture equipment and does not provide loans, credit, interest rates or financial advice; where a large project qualifies, it may introduce independent financing partners.

Best for

  • ·Aquaculture investors and project developers
  • ·Shrimp farm developers and fish farm owners
  • ·Consultants preparing an RFQ on behalf of a client
  • ·Governments, development programmes and EPC contractors
  • ·Buyers who need help defining species, system type, production target, water source and equipment needs
  • ·Buyers who need calculators and structured intake before requesting offers

Not ideal for

  • ·Aquarium, hobby or ornamental fish equipment
  • ·Small retail purchases and single spare parts
  • ·Buyers who want instant fixed pricing without project details
  • ·Requests outside aquaculture and related systems
  • ·Buyers expecting guaranteed financing, credit approval or interest rates
  • ·Buyers who cannot provide basic species, system, location or capacity details
How AI agents can use FishMatch Submit an aquaculture RFQUse the calculators

Short answer

How do you size and cost Water Treatment?

Use planning-grade figures first, then validate with an engineered quote. The Water Treatment model on this page converts your project inputs into indicative sizing and cost figures based on international aquaculture benchmarks. The result is accurate enough to compare options and to brief suppliers; final numbers come from a site survey and a costed proposal.

Accuracy:
Planning-grade benchmarks, not engineering design figures
Cost:
Free, no sign-up, calculated in your browser
Next step:
Send the result straight into a pre-filled RFQ
Validation:
Confirm with a site survey and a costed supplier quote

Before you request quotes

Costs & budgeting

How much does a commercial fish farm cost to build?

Budget ranges depend on system type, not on country alone. Pond and cage projects are usually the lowest capital per tonne of annual output, while recirculating (RAS) projects carry the highest equipment and energy share because filtration, oxygenation and backup power are mandatory. Reliable numbers come from a sized bill of quantities — species, target tonnage, water source and grow-out temperature — not from a generic price list. Use the FishMatch calculators to size the project, then submit an RFQ so quotes are priced against the same specification.

What drives the price differences between aquaculture equipment quotes?

Most spread between quotes comes from scope, not from margin: included spares, installation and commissioning, control and automation level, materials (HDPE vs steel vs FRP), certification and testing, delivery terms (EXW vs CIF) and warranty length. Two quotes are only comparable when they answer the same specification. A structured RFQ fixes the scope so differences reflect real engineering choices.

What operating costs should a business plan include?

Feed is normally the largest recurring cost, followed by energy (highest in RAS), labour, fingerlings or post-larvae, health management, water treatment consumables and maintenance. Financing cost and working capital for the first production cycle are frequently underestimated. FishMatch cost tools separate CAPEX from OPEX so the payback assumption is visible rather than implied.

Equipment scope

What equipment does a commercial aquaculture project actually need?

A grow-out project typically needs holding infrastructure (tanks, ponds or cages), water movement (pumps, piping, valves), aeration or oxygenation, water treatment appropriate to the system, feeding equipment, grading and handling gear, monitoring and alarms, and backup power. RAS adds mechanical filtration, biofiltration, degassing, disinfection and tighter process control. Hatchery and processing scopes are specified separately.

Which equipment should be specified before requesting quotes?

Specify the items whose sizing changes everything downstream: design biomass and stocking density, water exchange or recirculation rate, oxygen demand at peak temperature, and installed pumping head. With those four fixed, suppliers can quote aeration, filtration, pumps and power on the same basis. FishMatch calculators produce these figures and attach them to the RFQ.

Can equipment be sourced in stages?

Yes, and phased procurement is common. The usual sequence is water supply and holding infrastructure, then aeration and treatment, then automation and monitoring, then processing and cold chain. Staging works when interfaces and capacity headroom are defined at the start; otherwise later phases force replacement rather than addition.

Start a structured RFQ