Case study · Japan

11 tanks inside a building that could not be dug

A 240 m³ eel nursery in Japan: 11 tanks fitted inside a building that could not be dug.

240 m³

culture volume

Eel

species

Japan

country

New build

project type

The constraint

The nursery had to go inside an existing building where excavation was not possible. Tanks, drains and the treatment loop all had to fit without digging.

The configuration

Why it matters

Many farms start in a building that already exists. This project shows a RAS can be fitted to the building, not the other way round.

Project facts

A farm like this?

Send species, target output and site size. A first layout comes back in 3 days, free.

Design basis

Designing for eel.

Published figures for the species, and what each one changes in the design. Not measurements from this farm. Source: .FAO, European eel

Factor
What the research reports
What it changes in the design

Grow-out density

Up to 100–150 kg/m² of floor

Tank floor area, not volume, sets capacity

Grading

Uneven growth; frequent sorting

More, smaller tanks

For your own project

What to ask us about this farm.

We share what the farm owner allows.

Layout

Tank and loop arrangement.

Equipment list

Units and sizes.

Photos

From build and site.

Questions

Our engineers answer by email or video.

More projects

Other eel projects.

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Keep the tanks. Change the water.

Riyadh, Saudi Arabia · Volume2,250 m³ · SpeciesTilapia · TypeUpgrade
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Similar project?

Tell us what you are building. See how we would lay it out.

Send species, target output and site size. A first layout comes back in 3 days, free.