Atlantic salmon
farm in Clonlara

The Clonlara RAS facility

Recirculating Aquaculture & Aquaponics

Closed‑loop farming: fish, bacteria, plants and biogas work in synergy.We combine Recirculating Aquaculture Systems (RAS) with aquaponics to create a closed-loop, sustainable food production system in Ireland.The nutrient-rich water from our salmon tanks is then used to fertilize vegetables in our aquaponics greenhouse in soil less environment, creating a symbiotic relationship that produces two food sources from one system.

RAS – Recirculating Aquaculture System

Water from salmon tanks is continuously filtered and reused. Mechanical drums remove solids, biofilters convert ammonia to nitrate, and oxygen is replenished. >99% water reuse – only evaporation & sludge removed.

• Stock density: 70‑100 kg/m³ – fully controlled environment
• Optimal temp: 14°C year‑round, independent of seasons
• Biosecurity: No contact with wild fish, no lice treatments, no harmful chemical

Aquaponic & hydroponic integration

Nutrient‑rich water from the Fish feeds our soil‑less vegetable grow beds. No chemical fertilisers – we use mineralised fish waste to boost plant growth.

• Leafy greens: lettuce, spinach, herbs – pesticide‑free
• Deep water culture & NFT – 70% less water than field farming
• Disease‑free: closed environment eliminates pathogens

Circular bioeconomy

Fish biomas →waste → biogas → power → vegetables → local fertiliser