Astral Pool Viron EQ18 eQuilibrium Semi-Automatic Salt & Mineral Chlorinator w/ Bluetooth, Timer & Power Backup
Satisfaction Guarantee
All products covered
Same Day Dispatch
On orders placed by 12pm AEDT
Price Match
Quick, simple & easy
Secure Shipping with Tracking
Guaranteed to arrive safely
Flat rate shipping
Per order Australia-wide
Free, Easy Returns
Hassle-free and convenient
Customer Service & Support
Dedicated call center
Smarter sanitation. Balanced water. Healthier swimming.
The Astral Pool Viron eQuilibrium EQ18 is more than a saltwater chlorinator – it’s the intelligent core of your pool system. With semi-automatic pH control, built-in Bluetooth connectivity, timer functionality, and power backup, the EQ18 delivers precise, efficient, and reliable sanitisation for pools up to 50,000L (temperate) or 40,000L (tropical).
Designed and made in Australia for Australian conditions, this is the perfect solution for pool owners looking to reduce manual testing, cut chemical costs, and enjoy crystal-clear water with less effort – all via smartphone control.
System Options – Upgrade as You Go
The Astral Pool Viron eQuilibrium system is designed to evolve with your pool. Whether you start with the standard model or plan for full automation, each system level builds upon the last. Add sensors and a compatible pump over time to unlock advanced features like automatic pH and chlorine control, or even full Ai Mode with smart pump integration. The result? Better water quality, less manual work, and smarter energy savings—now and in the future.
STANDARD EQ18
Semi-automatic pH control. Manually adjust the amount of Acid added to the pool when the pump is running. Ideal for general 8-hour per day running periods.
SYSTEM 1 – BALANCE
Fully automated pH control. Using pH sensors, the unit measures pH balance and dispenses acid to keep the pool perfectly balanced.
Required pH Sensor Kit (Part #520135)
SYSTEM 2 – PRO
Full pH and chlorine automation. Set your desired levels and let the system maintain them with precision.
Required pH Sensor + ORP Sensor (Part #525146)
SYSTEM 3 – TOTAL AI MODE
Full water chemistry automation and pump control. The chlorinator adjusts flow rates, pH, and chlorine based on real-time pool conditions – even when the pump is idle.
Required: pH Sensor + ORP Sensor + Viron XT or Zodiac VS Pump + RJ12 Remote Cable (10927)
Why Choose the Viron eQuilibrium EQ18?
The EQ18 delivers smart chlorination with semi-automatic pH control. Once manually calibrated during the first week using pH tests, it can automatically adjust acid dosing based on chlorine output — helping reduce fluctuations and maintain better balance. You can also expand its capabilities at any time with optional sensors to unlock full pH and chlorine automation, or enable Total Ai Mode for complete water chemistry and pump control.
Perfect Water Quality
Automatically adjusts pH dosing based on chlorine output to help prevent red eyes, itchy skin, and chemical imbalances.
Smart App Control
Manage chlorine levels, schedules, timers and more via the Astral Pool ChlorinatorGO app with built-in Bluetooth.
Upgrade-Ready
Start with semi-automatic pH control and unlock full automation (pH and chlorine) with optional sensors and a compatible pump.
Full Ai Mode
Enables total control of water chemistry and pump operation for complete automation and maximum energy savings.
Eco-Conscious Choice
Reduce chemical handling and waste while maintaining pristine water quality.
Australian Made
Proudly designed and manufactured locally to withstand harsh Aussie conditions.
Key Features:
- Chlorine Output: 18 g/h – suitable for pools up to 50,000L (temperate) or 40,000L (tropical)
- Semi-Automatic pH Control: Adjusts acid dosing based on chlorine output for balanced water
- Fully Upgradeable: Add optional pH and chlorine probes for complete water chemistry automation
- Total Ai Mode Compatible: Integrates with Astral Pool Viron XT or Zodiac VS pumps for smart flow and sanitiser control
- Built-In Power Backup: Keeps settings and timers saved during power outages
- High Salt Tolerance: Operates between 3000–8000 ppm, with an ideal salt level of 4000 ppm
- Low Maintenance Design: Self-cleaning cell minimises scale and manual cleaning
- Viron Connect 10 Compatible: Supports integration with the Viron Connect 10 touchscreen controller for unified operation of pumps, lighting, heating, and sanitisation.
- ChlorinatorGO App Functions:
- Switch chlorinator On, Off, or Auto
- Toggle between Pool and Spa Mode
- Control pump speed (with compatible Astral Pool pump)
- View pH and ORP readings (when sensors are fitted)
- Turn lights On/Off and select colors (with Connect LITE or LITE+)
- Add or modify chlorination timers
- Set chlorine level (chlorine set point)
- Access maintenance and diagnostic functions
Technical Specifications:
| Viron eQuilibrium Range | EQ18 | EQ25 | EQ35 | EQ45 |
|---|---|---|---|---|
| Chlorine Output / Hour | 18 gms/hr | 25 gms/hr | 35 gms/hr | 45 gms/hr |
| *Pool Volume (litres) Temperate Climate | 50,000 | 96,000 | 130,000 | 170,000 |
| **Pool Volume (litres) Tropical Climate | 40,000 | 60,000 | 80,000 | 105,000 |
| Timers | 4 Timers + 2 Light Timers | |||
| Salt Levels (ppm) | 3,000 to 8,000 | |||
| Recommended Salt Levels (ppm) | 4,000 | |||
| Max Filter Pump Current Draw | 8.5 amps | |||
| Max Acid Dosing in Auto Mode | 400ml/hr | |||
| Max Acid Dosing in Manual Mode | 900ml/hr | |||
| App Control | ChlorinatorGO | |||
| Power Supply Voltage | 240 VAC - 50 Hz | |||
| Protection Index | IP43 | |||
| Flow through the Cell | 80 - 300 Lpm*** | |||
| Operating Water Temperature | 10°C - 40°C | |||
| Warranty | 3-Years 1-Year only on pH and chlorine Sensors, dosing motor/gearbox and associated tubing/fittings | |||
(*) Temperate climate water temperatures are lower and therefore inhibit algae and bacteria
(**) Tropical climate water temperatures are warmer and require higher chlorine output to combat algae and bacterial growth
(***) *If over 300LPM, a bypass manifold will need to be installed
💡 Did You Know?
In summer, a 50,000L pool with 5 bathers may need up to 250 grams of chlorine per day to stay clean and safe. That’s why correctly sizing your chlorinator matters—and why it's better to oversize than undersize.
Easy Installation & Maintenance
- Simple Setup: Installs horizontally with correct flow orientation, with the cell inlet near the electrical lead. Fits 40mm or 50mm PVC pipes.
- Low Maintenance: Automatic self-cleaning reduces calcium deposits. Manual cleaning, when needed, uses Salt Chlorinator Cell Cleaner or a safe 1:10 hydrochloric acid solution (see manual for details).
- Water Chemistry Matters: Maintain balanced water (pH, salinity, etc.) to prevent calcium build-up and ensure cell longevity, protecting your warranty.
| Parameter | Australian Standard | Ideal Range | How to Increase | How to Decrease | In Season Testing Frequency |
|---|---|---|---|---|---|
| Free Chlorine (ppm) | 1 – 3 | 1 – 3 | Add chlorine or increase equipment output | N/A | Weekly |
| pH | 7.2 – 7.8 | 7.4 | Add buffer or soda ash (sodium carbonate) | Add hydrochloric acid | Weekly |
| Total Alkalinity (ppm) | 60 – 200 | 80 – 140 | Add sodium bicarbonate | Add hydrochloric acid | Weekly |
| Calcium Hardness (ppm) | 100 – 400 *** | 90 – 300 | Add calcium chloride | Partially drain and refill pool* | Weekly |
| Cyanuric Acid (ppm) | Up to 50 | Below 30^ | Add cyanuric acid | Partially drain and refill pool* | Weekly |
| Salt Level (ppm) | 4000 – 7000 | 4000 at 27ºC | Add salt or minerals** | Partially drain and refill pool* | Monthly |
| Metal | N/A | 0 | N/A | Use 'Metal Remover' | Monthly |
* Fill pool with water from the mains water supply. Do not use rain water or well water.
** Do not add salt directly into the skimmer. Do not initiate electrolysis until salt has fully dissolved.
*** Reading is True Calcium Hardness, not Total Hardness.
^ If using ORP sensors, keep Cyanuric acid levels below 20ppm.
In The Box:
- a. eQ Controller
- b. Wall Mount Bracket (not shown)
- c. Wall Mount Screws (x2) (not shown)
- d. Electrolytic Cell and Electrodes
- e. Unions, 50mm Glue on Adapters, O-rings (x2)
- f. 50mm Injection Mixing Cell
- g. PVC Tube Acid Drum Connection/Venting Kit
- Owner’s Manual
Optional Add-Ons:
Expand your system’s capabilities with the following upgrade accessories.
| Accessory | Description | Part Number |
|---|---|---|
| pH Sensor Kit | Enables full pH automation; includes pH probe and mixing cell | 520135 |
| Chlorine Sensor (ORP Probe) | Enables chlorine automation (requires pH kit) | 525146 |
| RJ12 Remote Interface Cable | Required to connect ORP Sensor to XT pump or Viron Connect 10 controller | 10927 |
Frequently Asked Questions:
How do I choose the right size chlorinator?
It depends on your pool volume, climate, and usage. A 50,000L pool with 5 bathers in summer may need up to 250g of chlorine per day. Choosing a chlorinator with higher output ensures consistent sanitation during heatwaves or heavy use. For help selecting the right size, click here.
What’s included with the EQ18?
Each unit includes the eQ Controller, electrolytic cell and electrodes, 50mm injection mixing cell, unions with 50mm glue-on adapters, venting kit, and wall mount hardware.
Note: Optional pH and ORP sensors are sold separately. The ORP sensor (Part #525146) does not include the required RJ12 Remote Interface Cable (Part #10927), which is needed to connect to a Viron XT pump or Viron Connect 10 control system.
Does the pH control work automatically?
In standard mode, pH control is semi-automatic. The system doses acid based on chlorine output, but must be manually calibrated during the first week using a test kit. For full automation, add the pH Sensor Kit (520135).
Can I control the EQ18 using my phone?
Yes. The Astral Pool ChlorinatorGO app connects via Bluetooth and allows you to manage chlorinator settings, timers, pH and ORP readings (with probes), pump speed (if compatible), and lights (if using Connect LITE).
Is the EQ18 compatible with mineral pools?
Yes, the Astral Pool Viron EQ18 is compatible with both traditional saltwater and mineral pool blends. Maintain salt levels between 3000–8000 ppm, ideally around 4000 ppm.
Why is my chlorinator showing a “Low Salt” or “Low Conductivity” warning?
This means the salt level in your pool is below the minimum threshold for operation (3000 ppm). Test the pool’s salt level using a test strip or take a sample to a pool shop. If needed, add salt gradually to bring the level up to the recommended 4000 ppm. Be sure the salt is fully dissolved before restarting the chlorinator.
What does a “No Flow” error mean?
The chlorinator has detected insufficient water flow and paused chlorine production for safety. Check that your filter pump is running, skimmer baskets are clean, valves are open, and the flow sensor wiring is properly connected. Restart the system after correcting the issue.
How often should I clean the chlorinator cell?
The EQ18 has a self-cleaning reverse polarity cell, which reduces scale buildup. However, manual cleaning may be required periodically depending on your water chemistry. If calcium deposits are visible, clean the cell using a salt cell cleaner or a 1:10 hydrochloric acid solution as described in the manual.
How do I maintain pH and ORP sensors?
If you’ve installed the pH or ORP probes, clean and calibrate them monthly using the appropriate maintenance kit and test solutions. Always store the probes wet when not in use and avoid exposing them to direct sunlight for extended periods.
Can I retrofit the EQ18 into an existing setup?
Yes, the EQ18 is compatible with most standard 40mm and 50mm plumbing and can be installed in place of older chlorinators. Check the dimensions and flow orientation before installation, or contact us for guidance.
Is it safe to swim while the chlorinator is operating?
Yes. Chlorinators like the EQ18 are designed to maintain safe sanitiser levels and operate while the pool is in use. Always ensure your water is properly balanced before swimming.
Can I use the EQ18 in a spa or heated pool?
Yes, the system operates effectively in water temperatures up to 40°C. For spas or plunge pools, confirm water volume and ensure salt levels and water chemistry are kept within recommended ranges.
What type of salt should I use?
Use pool-grade salt or mineral blends with 99%+ purity. Avoid table salt or industrial-grade salts, as impurities can damage the chlorinator. Maintain salt levels between 3000–8000 ppm (ideally 4000 ppm).
| SKU | 13803 |
|---|---|
| GTIN | 9343609016395 |
| Barcode | 13803 |
| Package Length | Powerpack: 37 cm, Cell: 31 cm |
| Package Width | Powerpack: 22 cm, Cell: 15 cm |
| Package Height | Powerpack: 31 cm, Cell: 22 cm |
| Brand | Astral Pool |
| Model | Viron EQ18 eQuilibrium 18gm/h |
| Product Type | Pool Chlorinator |
| Shipping Type | Standard |
| Warranty | 3 Years |
| Self Cleaning | Yes |
| Chlorine Gas Output | 18 grams per hour |
| Pool Size | Up to 40,000L, Up to 50,000L |
| Battery Backup | Yes |
| Time Clock | Yes |
| Min/Max Salt levels | Minimum 3,000ppm, Ideal 4,000ppm, Maximum 8,000ppm |
| Plumbing | 50mm |
Shipping
Same-day dispatch applies to orders received by 12.00 pm (AEST) during business days. Orders received after 12.00 pm and on weekends or public holidays will be dispatched on the next business day.
Delivery fees are $19.95 flat-rate per order Australia-wide, no matter how many products are in it. Orders containing bulky items like sand filters, acoustic boxes, heat pumps, pool covers, and pool slides may incur additional fees as they require specialized carriers.
Below are the estimated time to arrival in business days once an order is shipped.
| Destination | Sydney | NSW | VIC | QLD | SA | WA/NT |
|---|---|---|---|---|---|---|
| Business Days | 1 - 2 | 2 - 4 | 2 - 4 | 2 - 4 | 3 - 4 | 5 - 6 |
Rural and remote addresses, where delivery is not provided every day, may take longer.
Returns
Satisfaction Guarantee: If you are not satisfied with a product for any reason, you are welcome to return it to us for a full refund or exchange within 30 days of the purchase date - even if you have used the product. Returns are free, and we will cover return shipping.
We take full responsibility for the safe arrival of the products that you order from us. We will replace at our expense any product that arrives faulty, damaged during transit, or is the incorrect product. Click here for details
If you have any questions about our shipping policy or our return policy, please contact us on 1300 766 619 or through our contact us form.