Astral Pool VX11 Pool Chlorinator Cell 21918 (Genuine) - Self-Cleaning Chlorinator Spare Part
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Astral Pool VX Series Replacement Self-Cleaning Cell
The Astral Pool VX11 Genuine Replacement Self-Cleaning Cell is a high-performance replacement cell for the Astral Hurlcon VX Series pool chlorinator. Designed with 11 solid plates, this self-cleaning cell provides efficient chlorine output of 42 grams per hour, keeping your pool water clear, sanitized, and safe.
Its self-cleaning technology minimizes calcium buildup, reducing maintenance needs and extending the cell’s lifespan. With a plate length of 150 mm, this cell is crafted for durability and performance.

Features:
- Effortless Pool Maintenance. Converts salt dissolved in pool water into chlorine, eliminating the need for manual chlorine addition and saving time.
- Gentler Swimming Experience. Automatically generated chlorine produces water that’s soft on skin and eyes, enhancing swimmer comfort.
- Genuine Astral Pool Replacement: Engineered for precise compatibility with the Astral Pool VX11 Pool Chlorinator.
- Self-Cleaning 11-Plate Design: Minimizes calcium buildup for easier maintenance and consistent chlorine output.
- High Chlorine Output: Delivers 42 grams per hour to maintain optimal pool sanitation and water clarity.
- Durable Solid Plate Construction: 150 mm solid plates provide robust, long-lasting performance.
- Ease of Installation and Maintenance. Quick-fit design for easy installation, removal, and cleaning.
- 3-Year Warranty
- Free Chlorine: To raise chlorine levels, add chlorine directly or adjust your equipment’s output.
- pH: Increase pH by adding buffer or soda ash; reduce pH with muriatic acid for proper balance.
- Total Alkalinity: Use sodium bicarbonate to raise alkalinity or muriatic/dry acid to lower it.
- Calcium Hardness: Adjust by adding calcium chloride, or reduce by partially draining and refilling the pool if levels are too high.
- Cyanuric Acid: Increase with cyanuric acid and decrease by partially draining and refilling.
- Salt Level: Check monthly. Add salt as needed, or drain and refill if levels are high.
Technical Specifications:
| Chlorine Output | 42g/hr |
|---|---|
| Number of Plates | 11 |
| Plate Material | Solid |
| Plate Dimensions | 65mm wide x 150mm long |
| Compatible with | Astral Pool VX11 |
| Self-Cleaning | Yes |
| Operating Water Temp | +10°C to +40°C |

Correct Pool Settings Guide for Astral Pool Salt Chlorinators
To ensure your pool stays clean, safe, and comfortable, maintaining the correct chemical balance is essential. Here’s a guide for ideal water parameters and adjustments to help you achieve perfect balance, with a focus on Astral Pool salt chlorinator systems.
| Parameter | Australian Standard | Ideal Reading/Range | How to Increase | How to Decrease | Testing Frequency (Peak Season) |
|---|---|---|---|---|---|
| Free Chlorine (ppm) | 1 – 3 | 1 – 3 | Add chlorine or increase equipment output | N/A | Weekly |
| pH | 7.2 – 7.8 | 7.5 | Add buffer or soda ash (sodium carbonate) | Add muriatic acid | Weekly |
| Total Alkalinity (ppm) | 80 – 300 | 80 – 140 | Add sodium bicarbonate | Add muriatic or dry acid | Weekly |
| Calcium Hardness (ppm) | 90 – 300 | 90 – 300 | Add calcium chloride | Partially drain & refill pool | Weekly |
| Cyanuric Acid (ppm) | 30 – 50 | 50 | Add cyanuric acid | Partially drain & refill pool | Weekly |
| Salt Level (ppm) | 4000 – 7000 | 4000 ppm at 27ºC | Add salt | Partially drain & refill pool | Monthly |
Guidelines for Adjustments
Regular monitoring and adjustment following this table will keep your pool within optimal parameters, enhancing the effectiveness of your Astral Pool salt chlorinator for a clean, comfortable swimming environment.
Maintenance Guide
For regions with high calcium hardness, periodic cleaning of the electrode is recommended to ensure optimal performance. Use a Salt Chlorinator Cell Cleaner or a 1:10 solution of hydrochloric acid to water, and always follow local disposal guidelines for the cleaning solution to protect the environment.

| SKU | 21918 |
|---|---|
| GTIN | 9317545276878 |
| Barcode | 21918 |
| Package Height | 14 cm |
| Package Length | 16 cm |
| Package Width | 30 cm |
| Brand | Astral Pool |
| Model | VX11 Self-Cleaning Cell / Electrode |
| Product Type | Cell / Electrode |
| Shipping Type | Standard |
| Genuine | Genuine |
| Compatible With | Astral Pool |
| Warranty | 3 Years |
| Self Cleaning | Yes |
| No. of Plates | 11 |
| Plate Length (mm) | 150 mm |
| Chlorine Gas Output | 42 grams per hour |
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.