Smart Aquaculture

Overview

SGT Smart Aquaculture is an end-to-end pond and tank monitoring platform — solar buoy sensors that measure dissolved oxygen, pH, ammonia, temperature, salinity and turbidity; edge-controlled aerators and feeders; AI-based biomass estimation; and a farmer-friendly mobile app.

Built for shrimp, tilapia, pangasius, carp and trout operations across Bangladesh, India, Vietnam and the Philippines. The system increases yield by 8-20% and cuts mortality 30-60% by maintaining ideal water quality and preventing overnight oxygen crashes.

Multi-parameter sensing — DO, pH, NH3, temperature, salinity, turbidity in one buoy
Edge-controlled aerators & feeders — rules fire even when the cloud is unreachable
AI biomass estimation — ±4% accuracy via camera + feed-response model
Mortality alerts — overnight oxygen crash protection saves entire harvests

How It Works

Sense — a solar-powered buoy with a probe stack samples water every 10-30 seconds at multiple depths.
Decide — edge rules run locally on the buoy (e.g., IF DO < 5.0 mg/L → aerator ON) and trigger actuators in real time.
Act — relays control paddle-wheel or diffused aerators, auto-feeders, water-exchange pumps and heaters.
Report — readings stream to the cloud, where AI estimates biomass, FCR and predicts harvest date; the farmer sees everything in a phone app and gets push alerts on alarms.

Features

Water-quality sensors — DO ±0.1 mg/L, pH ±0.05, NH3 ±0.02 mg/L, temp ±0.2 °C
Edge control — local if/then rules, offline operation, AES-128 encrypted radio
Auto-feed scheduler — by time, by biomass, or by demand (camera + appetite model)
Aerator orchestration — multi-aerator staggering reduces electric peak load
Biomass & FCR estimation — camera + feed model; ±4% biomass, ±0.05 FCR
Multi-pond dashboards — fleet view, per-pond drill-in, historic trends
Push / SMS / IVR alerts — works in rural areas, multi-language
Daily report PDF — emailed every morning with overnight events and KPIs

Use Cases

Shrimp farming — intensive ponds where DO crashes can wipe out a cycle
Tilapia / pangasius — high-density cage and pond culture
Carp polyculture — multi-species ponds with seasonal stocking
RAS / indoor systems — recirculating aquaculture with tight tolerance
Hatcheries — temperature and ammonia compliance for larval stages
Trout / cold-water — heater / chiller control with strict temperature bands

Specifications

Sensors: DO 0-20 mg/L ±0.1 · pH 0-14 ±0.05 · NH3 0-2 mg/L ±0.02 · Temp -5..+45 °C ±0.2 · Sal 0-40 ppt · Turb 0-1000 NTU
Buoy: Solar 20 W, 60 Wh battery, IP68, anchor + mooring kit
Sampling: 10-60 s configurable, multi-depth probe stack
Actuators: 4-16 relay channels for aerators / feeders / heaters / pumps
Comms: LoRa mesh (primary), LTE-M / NB-IoT (fallback), Wi-Fi (alt)
Edge gateway: Quad-core ARM, 2 GB RAM, 16 GB storage, 9-30 VDC, optional PoE
Security: AES-128 LoRa link, TLS 1.3 to cloud, 24-hour key rotation