The Best Aquaponics Monitoring Kits

Maintaining a healthy aquaponics system means keeping two living systems happy at the same time: fish and plants. That makes water-quality monitoring especially important. A shift in pH, conductivity, temperature, or dissolved oxygen can affect fish health, nutrient availability, bacterial activity, and ultimately the performance of the entire system.

For serious aquaponics monitoring, a simple handheld pH meter may not provide enough information. A more complete system should continuously track multiple parameters and, ideally, make that data available remotely.

For this comparison, we looked at four approaches to multiparameter monitoring that can be used in aquaponics and related growing applications:

• Atlas Scientific Wi-Fi Aquaponics Kit (Wi-Fi-AK)
• Bluelab Guardian Monitor Wi-Fi
• Hanna Instruments HI98194 Multiparameter Meter
• Hanna Instruments GroLine HI981420 Monitor

While each has advantages, the Atlas Scientific Wi-Fi-AK stands out as the most complete option for dedicated aquaponics monitoring, particularly because it combines water-quality measurements with dissolved oxygen and atmospheric measurements in one connected platform.

Atlas Scientific Wi-Fi Aquaponics Kit

The Atlas Scientific Wi-Fi Aquaponics Kit (Wi-Fi-AK) is purpose-built around the needs of aquaponics rather than simply adapting a hydroponics monitor or general-purpose water-quality meter.

That distinction becomes obvious when looking at what the system actually measures.

The Wi-Fi-AK monitors:

• pH
• Dissolved Oxygen
• Conductivity
• Water Temperature
• CO₂
• Humidity

Measurements are displayed locally and uploaded to ThingSpeak, allowing users to remotely monitor their system from a phone, tablet, or computer. Atlas also provides the code and setup instructions for the system.

That six-parameter combination is the biggest advantage of the Wi-Fi-AK.

Why Dissolved Oxygen Matters

Many grow monitors concentrate on pH, EC, and temperature. Those parameters are extremely important for plants, but aquaponics also involves fish and aerobic bacteria.

That makes dissolved oxygen (DO) particularly important.

The Atlas system includes a dedicated EZO Dissolved Oxygen circuit and Lab Grade Dissolved Oxygen probe, giving growers the ability to continuously monitor DO alongside pH, conductivity, and temperature.

Neither the standard Bluelab Guardian Monitor Wi-Fi nor Hanna’s GroLine HI981420 measures dissolved oxygen.

Automatic Temperature Compensation

The Wi-Fi-AK doesn’t simply measure temperature separately. Atlas specifies automatic temperature compensation for:

pH, Dissolved Oxygen, and Conductivity.

This is an important feature because temperature changes can affect electrochemical measurements.

Electrical Isolation

Another notable engineering feature is electrical isolation.

The system provides three electrically isolated slots for pH, dissolved oxygen, and conductivity. Atlas explains that these isolated ports are intended to obtain noise-free electrochemical readings when multiple sensors are operating in the same system.

This is particularly useful in an aquaponics installation where several probes remain submerged together for extended periods.

Built for Remote Monitoring

The Wi-Fi-AK automatically uploads measurements to the ThingSpeak cloud platform.

Instead of walking over to the system to check individual meters, users can remotely view their sensor data.

Atlas also designed the platform to be modifiable. Its documentation specifically describes the system as something engineers can customize by changing sensors or functionality for a particular application.

Atlas Scientific Wi-Fi-AK Specifications

Atlas currently specifies:

• pH range: 0–14
• pH resolution: 0.01
• Dissolved Oxygen range: 0–100 mg/L
• Conductivity range: 0–200K
• Conductivity resolution: 1 µS
• CO₂ range: 400–5,000 ppm
• Humidity range: 0–100%
• Operating voltage: 5 V
• Current consumption: 310 mA at 5 V
• IP64 enclosure
• Three electrically isolated sensor slots
• Automatic ThingSpeak uploads
• No soldering required
• No programming necessary

Calibration solutions are also included.

Verdict

For someone who wants to monitor the entire aquaponics environment rather than only the plant nutrient solution, the Atlas Scientific Wi-Fi-AK is the strongest system in this comparison.

Best for: Research aquaponics, commercial systems, advanced hobbyists, universities, controlled-environment agriculture and IoT-based aquaponics projects.

Bluelab Guardian Monitor Wi-Fi

Best for Traditional Hydroponic Monitoring

The Bluelab Guardian Monitor Wi-Fi is a strong competitor and costs substantially less than the Atlas kit.

It continuously monitors three important parameters:

• pH
• Conductivity
• Temperature

With its built-in Wi-Fi connection and Bluelab’s Edenic platform, users can remotely monitor measurements, receive alarms, and review historical data.

The Guardian also has a large display that makes checking measurements locally very easy.

Its biggest limitation in an aquaponics comparison is simply the number of parameters it monitors.

There is no dissolved oxygen measurement, and it does not include CO₂ or humidity sensing.

For hydroponics, that may be perfectly acceptable. For aquaponics, however, dissolved oxygen is an important parameter that many serious operators will want to track.

Verdict

An excellent option for growers primarily interested in pH, EC, and temperature, but the Atlas Wi-Fi-AK provides a significantly broader picture of an aquaponics environment.

Best for: Hydroponics and growers who only require the three core nutrient-solution measurements.

Hanna Instruments HI98194

Best Professional Portable Multiparameter Meter

The Hanna Instruments HI98194 approaches water-quality monitoring differently.

Rather than being primarily designed as a permanently installed Wi-Fi grow monitor, the HI98194 is a rugged portable multiparameter water-quality meter.

It can measure an impressive collection of parameters, including:

• pH
• ORP
• Conductivity
• TDS
• Salinity
• Dissolved Oxygen
• Pressure
• Temperature

Hanna says the instrument can monitor as many as 12 water-quality parameters using its multiparameter probe system.

Its pH accuracy is specified at ±0.02 pH at 25°C, and its dissolved oxygen sensor supports both percentage saturation and concentration measurements.

This makes the HI98194 a very capable instrument.

But its strength is also what separates it from the Atlas Wi-Fi-AK.

The Hanna is better thought of as a professional portable water-quality instrument, while the Atlas system is designed around continuous, connected aquaponics monitoring.

The Hanna also carries a significantly higher manufacturer-listed price, currently starting at $1,849.99.

Verdict

An excellent choice for environmental scientists and professionals who need to take highly detailed water-quality measurements at multiple locations. For a permanently monitored aquaponics installation, however, the Wi-Fi-AK’s connected architecture is more convenient.

Best for: Field testing, environmental monitoring, research and portable multiparameter measurements.

Hanna Instruments GroLine HI981420

Best Standalone Continuous Grow Monitor

The Hanna Instruments GroLine HI981420 is another strong option for continuous monitoring.

It measures:

• pH
• EC
• TDS
• Temperature

The system automatically logs measurements and can store approximately 30 days of data when operating at a 15-minute logging interval. Data can then be exported as CSV files through USB.

It also includes high/low alarms and an IP65-rated monitor enclosure.

Those features make the GroLine an attractive standalone monitor.

However, compared with the Wi-Fi-AK, two omissions stand out for aquaponics applications:

Dissolved oxygen isn’t measured, and remote Wi-Fi cloud monitoring isn’t built into the system.

Instead, logged measurements are exported through USB.

Verdict

A capable continuous monitor for nutrient solutions, but its focus remains much closer to hydroponics than comprehensive aquaponics monitoring.

Best for: Growers wanting a professional standalone pH/EC/TDS/temperature monitor without requiring cloud connectivity.

Aquaponics Monitoring Kit Comparison

Feature	Atlas Scientific Wi-Fi-AK	Bluelab Guardian Wi-Fi	Hanna HI98194	Hanna GroLine HI981420
pH	Yes	Yes	Yes	Yes
Conductivity / EC	Yes	Yes	Yes	Yes
Water Temperature	Yes	Yes	Yes	Yes
Dissolved Oxygen	Yes	No	Yes	No
CO₂	Yes	No	No	No
Humidity	Yes	No	No	No
Remote monitoring	Yes – Wi-Fi / ThingSpeak	Yes – Wi-Fi / Edenic	No built-in Wi-Fi	No built-in Wi-Fi
Continuous installed monitoring	Yes	Yes	Primarily portable	Yes
Automatic temperature compensation	pH, DO & conductivity	Measurement compensation supported	Yes, parameter dependent	Yes
Calibration solutions included	Yes	Yes	Kit dependent	Yes
Electrical isolation for electrochemical channels	Yes – pH, DO & EC	—	Integrated multiparameter probe	Integrated multiparameter probe
User-modifiable platform	Yes	Limited	Limited	Limited
Current listed price*	$1,214.99	$459 + tax	$1,849.99–$2,424.99	Varies
Best suited for	Complete connected aquaponics monitoring	Hydroponic nutrient monitoring	Professional field water testing	Continuous hydroponic monitoring

Why the Atlas Scientific Wi-Fi-AK Wins

Every product in this comparison has a legitimate use case.

The Bluelab Guardian is an accessible and convenient Wi-Fi monitor. The Hanna GroLine provides solid continuous nutrient monitoring and data logging. The Hanna HI98194 offers an impressive selection of professional water-quality measurements.

But aquaponics requires more than nutrient monitoring.

The Atlas Scientific Wi-Fi-AK combines six measurements — pH, dissolved oxygen, conductivity, water temperature, CO₂, and humidity — with Wi-Fi connectivity and cloud-based data monitoring in a single system.

Its biggest advantages are:

• Six environmental and water-quality measurements
• Dedicated dissolved oxygen monitoring
• Automatic temperature compensation for pH, DO, and EC
• Electrical isolation of pH, DO, and conductivity channels
• Automatic ThingSpeak cloud uploads
• Remote monitoring from a phone, tablet, or PC
• Included calibration solutions
• No soldering required
• No programming required for standard setup
• An architecture that can be modified for custom engineering projects

The lower-cost competitors certainly win on upfront price. But they generally achieve that lower cost by monitoring fewer of the parameters that matter in a complete aquaponics environment.

The Hanna HI98194 actually measures more water-quality variables, but it is a different class of instrument: it is a portable field meter, carries a substantially higher starting price, and doesn’t provide the same built-in Wi-Fi/ThingSpeak continuous-monitoring approach.

Final Verdict: Atlas Scientific Wi-Fi-AK Is the Best Overall Aquaponics Monitoring Kit

If the goal is simply checking pH and EC, there are cheaper options.

But if the goal is to build a serious, continuously monitored aquaponics system, the Atlas Scientific Wi-Fi Aquaponics Kit is the clear winner in this comparison.

It monitors not just the nutrient conditions plants depend on, but also dissolved oxygen for the aquatic side of the system and CO₂/humidity for the surrounding growing environment.

That broader measurement capability is what separates the Wi-Fi-AK from conventional hydroponic monitors.

For researchers, commercial growers, universities, engineers, advanced aquaponics operators, and anyone who wants detailed remote insight into their system, the Atlas Scientific Wi-Fi-AK offers the most complete aquaponics-focused monitoring package of the products compared here.