EcO Start SALT + Connect – Smart Saltwater Pool Monitor with Wi-Fi Gateway

Smarter water care for saltwater pools and hot tubs.

Your salt chlorine generator handles chlorine production. EcO Start SALT + Connect helps you keep track of the water conditions that matter.

Designed for pools and hot tubs using saltwater treatment systems, this complete smart monitoring solution combines a saltwater-compatible EcO sensor, the iopool cOnnect Wi-Fi gateway, and the free iopool app.

Monitor pH, oxidation-reduction potential (ORP), and water temperature, review your latest readings remotely, and get personalized guidance to help maintain your water.

• Designed for saltwater pools and compatible hot tubs

• Monitors pH, ORP, and water temperature

• Includes cOnnect for remote Wi-Fi monitoring

• Personalized pool care recommendations through the app

• No monthly subscription

• 2-year EcO warranty

Important: EcO SALT is compatible with saltwater treatment, but it does not directly measure salt concentration (ppm) or free chlorine (ppm). Salt test strips are included for separate salinity checks.

What Is EcO Start SALT + Connect?

EcO Start SALT + Connect is iopool's smart pool water monitoring solution for saltwater pools and compatible saltwater hot tubs.

It combines three essential components:

EcO SALT – Smart Water Monitor

A floating water analyzer designed for salt-treated water. It measures pH, ORP, and temperature to help you better understand your pool's changing water conditions.

iopool cOnnect – Bluetooth/Wi-Fi Gateway

The included gateway receives EcO readings over Bluetooth and sends them through your home's Wi-Fi network, enabling remote access when connected.

The iopool App

A free companion app that displays your available measurements and provides personalized water care guidance.

Together, these components create a connected monitoring system specifically suited to saltwater pool ownership.

For more information about treatment compatibility, read our guide to using iopool with saltwater pools.

Why Choose a Monitor Designed for Saltwater Pools?

Saltwater pools use a salt chlorine generator to produce chlorine from dissolved salt. Although these pools rely on chlorine for sanitation, their treatment system differs from conventional chlorine dosing.

Proper water balance still matters.

EcO SALT helps owners monitor key water parameters while using a sensor version specifically designed for salt-treated environments.

Unlike the standard EcO monitor, which is not compatible with saltwater treatment, EcO SALT is designed for pools equipped with salt chlorinators.

The SALT version is about treatment compatibility, not additional salt measurements.

It does not control your salt chlorine generator, adjust its output, or replace the manufacturer's recommended salt-level tests.

What Does EcO SALT Measure?

EcO SALT directly measures three water parameters.

pH – Track Your Saltwater Pool's Water Balance

pH indicates how acidic or basic your pool water is.

Monitoring pH helps you identify changes that may affect swimmer comfort and chlorine effectiveness. This is particularly useful in saltwater pools, where maintaining suitable pH remains an important part of routine care.

ORP – Follow Your Water's Disinfection Potential

ORP stands for oxidation-reduction potential. Measured in millivolts (mV), it indicates the water's ability to support oxidation and disinfection.

ORP is useful for understanding changes in water treatment conditions, but it is not a direct reading of free chlorine concentration in ppm.

In saltwater pools, ORP can also vary with pH, stabilizer levels, chlorine generation cycles, and other water conditions.

Water Temperature – Monitor Changes in Your Pool or Hot Tub

EcO measures water temperature, giving you another useful indicator for everyday pool and spa care.

Temperature can influence water treatment requirements and how you manage your pool or hot tub.

What Does EcO SALT Not Measure Directly?

EcO SALT does not directly measure:

• Salt concentration or salinity (ppm)

• Free chlorine concentration (ppm)

• Cyanuric acid (CYA)

• Total alkalinity (TA)

• Calcium hardness

These additional parameters require appropriate manual testing.

Saltwater monitoring is not the same as salt-level testing. Use the included salt test strips to check salinity and follow the recommendations from your salt chlorine generator manufacturer.

Remote Saltwater Pool Monitoring with cOnnect

Want to check your pool water while you're at work or away from home?

EcO Start SALT + Connect includes the gateway required for remote monitoring.

Here's how it works:

EcO SALT → Bluetooth → cOnnect Gateway → Home Wi-Fi → iopool App

EcO uses Bluetooth Low Energy (BLE) to communicate its measurements. The cOnnect gateway receives those readings and transmits them through your home internet connection.

You can then review the latest available measurements in your iopool app, wherever you have internet access.

For remote monitoring, you need:

• A 2.4 GHz home Wi-Fi network with internet access

• An available power outlet for cOnnect

• A gateway location within Bluetooth range of EcO and home Wi-Fi coverage

• A compatible smartphone with the iopool app

Read our iopool Wi-Fi gateway installation guide for setup instructions.

Note: Remote updates depend on the Bluetooth and Wi-Fi connections. EcO is a monitoring system, not a continuous live-streaming sensor.

The iopool App – Turn Water Readings into Pool Care Guidance

Knowing your pool's water conditions is the first step. Understanding what to do next is just as important.

The free iopool app brings your monitoring information together and helps guide your maintenance routine.

With the app, you can:

• View your latest available pH, ORP, and temperature readings

• Access water monitoring data remotely through cOnnect

• Receive personalized pool care recommendations

• Follow suggested maintenance actions and treatment guidance

• Enter additional water test results when requested

The app uses your pool's characteristics and available water measurements to help you make informed maintenance decisions.

Available on iOS and Android, with no paid subscription required.

The app provides guidance; it does not automatically operate or adjust your salt chlorine generator.

Is EcO Start SALT + Connect Compatible with Your Pool?

EcO Start SALT + Connect is designed primarily for:

• Saltwater swimming pools equipped with a salt chlorine generator

• Compatible saltwater hot tubs and spas

• Pools using compatible salt-based water treatment systems

For chlorine- or bromine-treated pools without saltwater treatment, the standard EcO model is generally the more appropriate solution.

If your pool uses a combination of treatment methods, check compatibility with iopool before purchasing.

What's Included with EcO Start SALT + Connect?

Your saltwater monitoring solution includes:

• 1 × EcO SALT Smart Water Monitor

• 1 × iopool cOnnect Bluetooth/Wi-Fi Gateway

• 1 × Quick Start Guide

• 10 × iopool 6-in-1 test strips with reference chart

• 20 × salt test strips

• 1 × iopool measuring spoon

The gateway is included as an essential component of this US solution. No separate gateway purchase is needed for remote connectivity.

How to Set Up Your Saltwater Pool Monitor

Getting started with EcO SALT involves four main steps.

1. Set up the iopool app

Download the app, create your account, and enter your pool or hot tub information, including its treatment type.

2. Prepare and activate EcO SALT

Follow the Quick Start Guide to prepare your monitor and place it in the water in the correct measuring position.

3. Connect the cOnnect gateway

Plug the gateway into a suitable outlet within Bluetooth range of the monitor and connect it to your 2.4 GHz home Wi-Fi network.

4. Complete your water profile

Perform the additional water tests requested by the app, including salt-level testing where appropriate.

Once your system is connected, you can follow your available water readings and maintenance recommendations from your smartphone.

Key Technical Information and Long-Term Maintenance

Direct measurements: pH, ORP (mV), water temperature

Water treatment: Saltwater-compatible EcO version

Sensor communication: Bluetooth Low Energy (BLE)

Remote monitoring: Included cOnnect Bluetooth/Wi-Fi gateway

Gateway Wi-Fi: 2.4 GHz

Mobile app: iOS and Android

Subscription: None required

EcO warranty: 2 years from purchase, subject to warranty terms

Replaceable Components on EcO V2

On EcO V2 models, the battery and sensors can be replaced separately, helping extend the monitor's usable life.

Typical component lifespans are:

• Battery: Approximately 2–3 years

• pH and ORP sensors: Approximately 3–5 years

Actual lifespan depends on operating conditions, water quality, maintenance, and proper winter storage. These are indicative ranges, not fixed replacement dates or warranty periods.

Discover how EcO V2 battery and sensor replacement works.

Calibration and Care

EcO is calibrated before use. From the second season onward, calibration at the start of each season is recommended. For year-round use, annual calibration is advised.

Follow the app's instructions and use the dedicated EcO calibration kit when necessary.

During operation, keep the sensor components immersed. Follow iopool's recommended storage and winterizing procedure when removing the monitor from service.

EcO Start SALT + Connect vs. EcO Start + Connect

Choosing the right EcO depends primarily on how your pool or hot tub is sanitized.

If your pool uses a salt chlorine generator, choose EcO Start SALT + Connect.

If your pool uses conventional chlorine or bromine treatment without salt, explore EcO Start + Connect for chlorine- and bromine-treated pools.

You can also compare iopool starter solutions to find the right setup.

Understanding ORP in Saltwater Pools

A salt chlorine generator produces chlorine, while EcO SALT monitors the water's oxidation-reduction potential.

These are related, but they are not the same measurement.

ORP can help you follow changes in disinfection conditions. However, an ORP reading cannot tell you the exact amount of free chlorine in ppm or how much salt is dissolved in your pool.

For responsible saltwater pool care, combine EcO's pH, ORP, and temperature monitoring with appropriate manual chlorine, salt, and water balance tests.

Frequently Asked Questions

Does EcO SALT measure salt levels in ppm?

No. EcO SALT is designed for saltwater pools, but it does not directly measure salt concentration. The package includes 20 salt test strips for separate salinity checks.

Does EcO SALT measure chlorine levels?

No. EcO measures ORP, which indicates oxidation and disinfection potential. It does not directly measure free chlorine concentration in ppm. Use an appropriate chlorine test when needed.

Does EcO SALT work with a salt chlorine generator?

Yes. EcO SALT is designed for salt-treated pools, including those equipped with salt chlorinators. It monitors water conditions but does not control chlorine production.

Is the cOnnect Wi-Fi gateway included?

Yes. EcO Start SALT + Connect includes the cOnnect Bluetooth/Wi-Fi gateway. It is part of the complete starter solution, not a separately required add-on.

Can I monitor my saltwater pool when I'm away from home?

Yes. The included gateway sends EcO readings through your home Wi-Fi and internet connection, allowing you to check available measurements remotely in the iopool app.

Do I need Wi-Fi to use EcO SALT?

EcO itself communicates using Bluetooth. For remote monitoring through the included cOnnect gateway, you need a compatible 2.4 GHz Wi-Fi network with internet access.

Can I use EcO SALT in a saltwater hot tub?

Yes, EcO SALT is designed for compatible saltwater pools and hot tubs. Check with iopool if your spa uses a specialized or combined treatment system.

Do I still need test strips?

Yes. EcO directly measures pH, ORP, and temperature. Additional tests are needed for salinity, free chlorine concentration, total alkalinity, stabilizer, and other relevant water balance parameters.

Is a subscription required?

No. EcO Start SALT + Connect does not require a monthly subscription for access to the iopool app and its included remote monitoring functionality.

How long does EcO SALT last?

On EcO V2 models, the battery typically lasts 2–3 years and the pH and ORP sensors may require replacement after approximately 3–5 years. These components can be replaced separately, depending on the model.

What warranty and return policy apply?

EcO comes with a 2-year warranty, subject to applicable terms. Eligible US purchases may be returned under the iopool US 30-day return policy.