Farming · Zambia
Smart aquaculture: water-quality monitoring
Continuous water-quality readings from ponds and cages, with an alert the moment oxygen, ammonia or temperature moves out of range.
Water profile
A reading has a place and a depth
Temperature, oxygen and other water-quality measurements describe conditions at one monitored point. A probe in one position does not describe every part of a pond or every cage.
We begin with your species, production method and monitoring practice, then assess where sensors will give useful information. Pond farms, cage operators and hatcheries can need different positions and equipment arrangements.
Drawn illustration
The drawing scrolls sideways. Everything in it is written out below.
Near the surface
A shallow probe responds quickly to air temperature, sunlight and aeration. It describes the top of the water column, which can differ from conditions where stock spends most of its time.
- Depth
- 0.5 m (example)
- Dissolved oxygen
- 6.8 mg/l
- Water temperature
- 26.9 °C
Text version of this diagram
A pond and cage drawn in cross-section with three marked probe depths: near the surface, at mid depth and inside a cage.
- Near the surface. A shallow probe responds quickly to air temperature, sunlight and aeration. It describes the top of the water column, which can differ from conditions where stock spends most of its time. Written example: Depth — 0.5 m (example); Dissolved oxygen — 6.8 mg/l; Water temperature — 26.9 °C.
- At mid depth. A deeper probe describes conditions away from the surface. Where a farm has stratified water, two depths tell a more complete story than one. Written example: Depth — 1.5 m (example); Dissolved oxygen — 4.9 mg/l; pH — 7.4. Target ranges depend on species, life stage, environment and your operating procedure.
- Inside a cage. A cage probe reports conditions in the volume the stock occupies. Mounting, fouling and cleaning routines all affect how long those readings stay meaningful. Written example: Depth — 3.0 m (example); Dissolved oxygen — 5.4 mg/l; Last reading — 05:40, twenty minutes ago. Checking, cleaning and maintaining sensors keeps the history worth reading.
Prepared trend
Text version of this diagram
A single-probe dissolved-oxygen reading drifts down overnight to about 4.4 mg/l near dawn, rises through the morning to about 7.9 mg/l in the afternoon, then falls again towards evening. Feeding and aeration are written beside the chart because the farm recorded them, not because the sensors measured them. Thresholds are agreed with the people responsible for stock management.
From an alert to a farm decision
A fresh reading outside the range
The responsible person checks conditions at the pond or cage and follows the farm's procedure. The alert prompts the check; it does not make the decision.
A reading that never arrived
Equipment and connectivity affect whether a fresh reading arrives at all, so the same procedure should say what happens when the record goes quiet.
Monitoring can inform decisions about feeding or aeration. Automatic aerator control requires a separately defined scope: receiving an alert does not mean equipment will act on it.
Give each monitored pond or cage an owner
Installation includes verifying the selected readings and configuring the agreed alert ranges. Decide who checks the equipment, who reviews trends and who responds to a condition. That ownership turns a stream of readings into a record the farm can use.
Read a trend alongside feeding, aeration and the observations your team already records. Those activities are context for the chart; they are not measured by the sensors.
Send us the farm detail
Enough for a proposal that matches the water you actually work in.
- Species and life stage
- Number and type of ponds or cages, with approximate depths
- Current monitoring practice
- The changes you need to follow, and who responds to them
What it monitors
What you can see and control
Dissolved oxygen
The reading that most often decides whether stock survives the night.
Temperature
Water temperature at the sensor depth.
pH
Acidity of the water.
Ammonia
Build-up from feed and waste.
Salinity
Salt content where it matters for the species.
Why it matters
What it changes day to day
- Respond to low oxygen before fish are lost.
- Adjust feeding and aeration using measured conditions.
- Keep a water-quality history for each pond or cage.
Who it is for
Typical users
- Pond fish farms
- Cage culture operators
- Hatcheries
How it works
From installation to alerts
- 01
Survey and install
We confirm what you need to monitor, fit the devices and check each one reports correctly before handover.
- 02
Connect
Devices send data to the cloud platform. You get user accounts, alert rules and the thresholds that matter to you.
- 03
Monitor and act
Watch live status on the web or mobile app, get alerts when something moves out of range, and review history when you need it.
Questions
Answered directly
Which readings matter most?
For most farms, dissolved oxygen and temperature, with ammonia and pH close behind. We help you set alert thresholds for your species.
Does it work for cages as well as ponds?
Yes. Sensors can be fitted in ponds and in cages.
Talk to the Lusaka office
Get a quote in Zambia
Send the number of vehicles, sites or units and what you want to control. We reply with the right set-up and a quote.
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Responsible company in Zambia
HAPIS Tech Solutions Limited
- 9B Corner of Kiola and Ngwezi Road, Roma, Lusaka, Zambia
- +260 977 727 568(phone and WhatsApp)
- paul@hapis.tech