2026-06-04 · Fish Farming
Recirculating aquaculture (RAS) saves water but asks a lot of the farmer. Here is an honest look at what it involves and how to begin wisely.
Recirculating systems reuse water by cleaning it between passes through the fish tanks. In places where water is scarce or costly, that is very attractive. It is also one of the more demanding ways to farm fish, and it is kinder to your finances and your fish to approach it with eyes open.
The basic building blocks
- Circulation: a circulation pump moves water through the loop.
- Solids removal: a drum filter takes out particles before they break down.
- Oxygen: aeration, such as a blower, keeps levels healthy.
- Monitoring: a meter helps you see changes early.
What people often underestimate
Reliable power, a back-up plan if a pump stops, regular cleaning and the skill to read water quality. A recirculating system leaves less room for error than an earth dam, because the fish live closer together and changes happen faster.
Start small, learn, then grow
Many successful farmers begin with a modest system or with a pond and add equipment as experience grows. If you are ready to plan something larger, the RAS starter package is quoted individually after we understand your site, water and goals.
Get the foundations right
A feasibility study or site assessment can help you decide whether recirculation, tanks or a lined dam fits you best. Items shown here are demonstration records until specifications are confirmed.
Whatever you choose, we would be glad to talk it through with you.