Before you request quotes for a commercial aquaculture project

1. Biology

Every piece of equipment in an aquaculture facility is sized from a biological load. Define it first and the rest of the specification follows.

• Species

  Sets temperature range, oxygen demand, water-quality tolerances, feed type and which systems are viable at all.

• Life stage in scope

  Broodstock, incubation, larval, nursery, on-growing or full cycle — each is a different facility.

• Target harvest weight

  Determines cycle length, feed load and the size distribution the system must carry.

• Production cycles per year

  Converts a single-cycle system into an annual output, and drives water and energy consumption.

• Mortality assumption

  Decides how many juveniles must be stocked to reach the target harvest, and is a leading source of proposal mismatch.

• Feed assumptions (FCR and feeding rate)

  Peak daily feed load is the input that sizes filtration, oxygen and waste handling.

2. Production

Suppliers cannot size a system from an annual tonnage alone — they need the peak load that tonnage implies.

• Annual production (tonnes or units)

  The headline target, used for cost per annual tonne comparisons.

• Peak standing biomass

  The single most important sizing figure in any land-based system. Missing it is the most common RFQ omission.

• Target stocking density

  Determines tank or pond count and volume for the same biomass.

• Harvest pattern

  Continuous, batch or seasonal harvesting changes tank configuration and grading requirements.

3. Site

Site conditions eliminate options before any supplier does. Establish them before you request pricing.

• Country and exact location

  Drives logistics, duties, permits, labour cost, construction cost and which suppliers can service the site.

• Water source and available volume

  Borehole, river, lake, sea or municipal supply — with daily volume available and reliability.

• Water temperature profile

  Seasonal range decides heating or chilling requirements and the achievable growth curve.

• Salinity and water quality analysis

  Iron, manganese, hardness, turbidity and nitrogen compounds all change the treatment train.

• Climate

  Ambient temperature, humidity, storms and evaporation affect buildings, energy and system choice.

• Land area and topography

  Constrains pond count, tank layout, gravity flow and expansion capacity.

• Electricity: capacity, voltage, phase, reliability

  Grid capacity is a hard constraint on recirculating and intensive systems.

• Backup power availability

  Determines generator sizing and which loads must be protected.

• Discharge restrictions

  Effluent limits determine whether treatment and sludge handling are inside the project scope.

4. Farming method

Choose the method on site conditions, species and economics — not on the first supplier you speak to.

• RAS (partial or full recirculation)

  Highest control and biosecurity, highest CAPEX and energy intensity; justified where water, land or climate is limiting.

• Pond systems

  Lower CAPEX per tonne, higher land and water use, more exposed to climate and disease pressure.

• Biofloc

  Intensifies pond production with reduced water exchange, at the cost of tight operating discipline.

• Cage systems

  Low CAPEX per tonne where a licensed, suitable water body exists; exposed to environmental and regulatory risk.

• Raceways and flow-through

  Simple and effective where abundant clean water at the right temperature exists.

• Hybrid configurations

  Nursery in RAS with on-growing in ponds or cages is a common way to balance cost and control.

5. Water treatment

The treatment train is where quotations diverge most. Define the requirement before suppliers define it for you.

• Solids removal

  Mechanical filtration and settling determine everything downstream, including biofilter performance.

• Biofiltration

  Sized from peak daily feed load and design temperature; state the target TAN and nitrite limits.

• Oxygenation

  Oxygen source, transfer method and target dissolved oxygen at peak biomass.

• Degassing / CO2 stripping

  Regularly under-specified in low-exchange systems and a frequent cause of underperformance.

• UV and/or ozone

  Different purposes and different risks — specify the pathogen and clarity requirement, not the equipment.

• Makeup water volume

  Sets operating cost, permit exposure and the practical exchange rate of the system.

• Sludge handling

  Collection, thickening, storage and disposal — often outside the equipment scope and inside your permit.

6. Infrastructure

The items that decide whether a quotation is comparable to another one at all.

• Tanks or ponds: number, volume, material

  Should follow from density and harvest pattern rather than a supplier's standard product.

• Buildings and civil works

  Frequently the largest single difference between a turnkey and an equipment-only offer.

• Feed system

  Storage, distribution, automation and daily capacity at peak feed load.

• Pumping

  Flow in m³/h and total dynamic head, duty and standby configuration.

• Controls and automation

  What is monitored, what is controlled and how the two are integrated.

• Alarms

  Thresholds, escalation path and behaviour during power or network loss.

• Backup and redundancy systems

  Pumps, blowers, oxygen, generators and controls — state your required redundancy level rather than accepting each supplier's default.

7. Commercial

Suppliers price risk and scope, not only equipment. Give them the commercial frame.

• Budget range

  A range prevents proposals in the wrong class and saves an entire procurement round.

• Timeline and target commissioning date

  Long-lead equipment is often the binding constraint on the schedule.

• Installation scope expected

  Supply-only, supervised or full installation — state which you want quoted.

• Commissioning expectations

  Define mechanical completion, performance acceptance and biological handover separately.

• Training requirement

  Operator capability determines whether the equipment achieves anything.

• Warranty expectation

  Duration and scope you require, so offers can be compared on equal terms.

• Spare parts

  Critical spares held on site versus ordered on failure is a real cost and risk difference.

• Financing requirement

  If external funding is needed, the documentation requirements affect how the project must be specified and evidenced.

Then choose the supplier

Once the project basis is fixed, supplier selection becomes an evaluation rather than a guess.

Then compare the proposals

Build a supplier-ready aquaculture RFQ