Aquaculture is where micro-nano bubble oxygenation has the most field evidence. Shrimp and fish ponds lose oxygen fastest between midnight and dawn, and that is when crops are lost. Fine bubbles that stay suspended keep dissolved oxygen up through the whole water column, not just at the surface.
95%shrimp survival with nanobubbles in an East Java raceway trial
~2×total harvest versus a diffuser aerator in the same trial
8.7 kg/m³shrimp productivity reached with nanobubble oxygenation
Where it is used- Vannamei and tiger shrimp grow-out ponds in Andhra Pradesh, including Oxynity sites in Bhimavaram, Kakinada and Nellore
- Indoor raceway shrimp farms in East Java, Indonesia
- Indoor shrimp and mud crab farms in Singapore
- Salmon hatcheries and land-based tanks in Canada and Chile
- Fish ponds for rohu, katla and pangasius
How it works hereIn a stocked pond, algae make oxygen by day and consume it at night. Paddle wheels mix the surface, but their large bubbles escape in seconds and the bottom stays low in oxygen.
Oxynity draws pond water, infuses oxygen at the pump suction and shears it into micro and nano bubbles in a stainless steel mixer. The returned water spreads oxygen down to the sludge layer, where waste breaks down and harmful gases such as ammonia and hydrogen sulphide build up.
With an optional DO sensor, the generator can switch on automatically at 5 ppm and off at 9 ppm, so the pond is protected through the night without anyone on the bank.
What the research shows
Evidence from the field
Peer-reviewed studyNanobubbles vs diffuser aeration for vannamei shrimp
East Java, Indonesia · Aquaculture and Fisheries, 2021
- Indoor raceway ponds stocked at 680 shrimp per m³
- Survival reached 95% and productivity 8.7 kg/m³ with nanobubbles
- Total harvest roughly doubled to 436 kg; dissolved oxygen was higher and FCR lower than with a diffuser
Source: Rahmawati et al., Aquaculture and Fisheries 6(3), 2021 ↗Industry case studyOxygen cost in a Chilean salmon tank
Chile · reported by The Fish Site, 2021
- A tank of over 1.5 million fish replaced three oxygen cones with one 10 HP nanobubble generator plus one cone
- Oxygen use fell from 134 to 54 L/min
- Electricity and oxygen costs were cut by about half, saving over US$3,100 a month
Source: The Fish Site: How nanobubbles can make aquaculture more sustainable ↗Peer-reviewed studyAir nanobubbles in marine recirculating systems
Singapore · Fishes (MDPI), 2025
- Six-week trial with barramundi, red snapper and tilapia
- Growth, FCR and survival were the same as the control, and dissolved oxygen did not rise significantly
- Nitrite was lower (0.99 vs 1.40 mg/L) and nitrifying bacteria more abundant with nanobubbles
Source: Sean et al., Fishes 10, 550, 2025 ↗ Using OxynityHow we set it up for shrimp & fish aquaculture
- Match the model to pond area: 1.5 HP for about 1 acre, 4 HP for about 2.5 acres, 5.5 HP for about 3 acres
- Run with an oxygen concentrator for the highest dissolved oxygen, or on air where oxygen supply is limited
- Place the generator on the bank with the outlet directed along the pond so the oxygen-rich water travels across it
- Keep a few paddle wheels for circulation if the pond is heavily stocked
Good to know: Results depend on stocking density, algae, weather and water exchange. The air-nanobubble RAS study shows the benefit is clearest where oxygen demand is high, as in stocked shrimp ponds at night.
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