Genuine Zodiac® Nature 2 Spa Sticks - Spa Sanitizer - Natural Spa Pool Purifier
Genuine Zodiac® Nature 2 Spa Sticks - Spa Sanitizer - Natural Spa Pool Purifier is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
Free Shipping over $149 for most products. Choose Express Post for fastest shipping!
GENUINE Zodiac® Nature2® Spa Stick – Natural Spa & Pool Purifier
⚠️ WARNING: Many online sellers are listing cheap FAKE knock-offs that contain little or no silver at all. Buy only the genuine Zodiac® Nature2® for real sanitising performance.
Why Choose the Genuine Nature2® Spa Stick?
The Zodiac® Nature2® Spa Stick is a patented mineral-based purifier that uses silver (10g/kg), zinc and copper ions to kill bacteria, destroy algae and reduce chlorine or bromine use. The result is softer, clearer, healthier water without heavy chemical dosing. Counterfeit copies may look similar but lack the required silver content and do not deliver these benefits.
Key Features
- Not affected by heat or heavy bather load
- Gentle on skin, eyes and hair; reduces stinging and irritation
- No electricity or moving parts – simply place in the filter area
- Use with an approved oxidiser for crystal-clear, safe water
- Service life: up to 4 months (spas up to ~4,000L)
How Nature2® Works (The Science)
- Water flows through a high-surface-area ceramic substrate coated with silver, copper and zinc.
- Silver and copper ions dissolve into the water at safe, effective levels (~0.01–0.06 ppm silver). At saturation, the cartridge stops releasing excess silver, minimising staining risk.
- Silver-laden dissolved oxygen binds to bacteria and destroys pathogens.
- Copper (released at start-up) and zinc help suppress and prevent algae growth.
Active Constituent
10g/kg Silver (Ag) present as metal
Note: Fake cartridges are often “silver-washed” or contain <1g/kg (sometimes none) – they cannot sanitise like the genuine product.
Benefits of the Genuine Product
- Lower chemical use and ongoing costs
- Softer, more comfortable water feel
- No harsh chemical odours
- No bleached swimwear or damaged spa surfaces
- Stable, long-lasting water clarity
How to Spot a Fake Nature2® Stick
- Too cheap to be real – genuine sticks use high-purity silver and cost accordingly.
- Packaging errors – missing Zodiac® branding, poor printing, or spelling mistakes.
- No active constituent listed – if it doesn’t clearly state 10g/kg Silver, avoid.
- Performance red flags – no improvement in clarity, lingering odours, or rapid algae return.
✅ Buy only from authorised Zodiac® dealers to guarantee authenticity and performance.
Genuine vs Fake – At a Glance
| Aspect | Genuine Zodiac® Nature2® | Common Fake Knock-off |
|---|---|---|
| Silver content | 10g/kg Silver (Ag) listed and present | Often <1g/kg or none (unlisted) |
| Performance | Proven reduction of bacteria & algae; lower chlorine use | Little to no sanitising effect |
| Safety | Controlled ion release (~0.01–0.06 ppm silver) | Uncontrolled/ineffective; unknown constituents |
| Packaging & marking | Correct Zodiac® branding & labelling | Inconsistent fonts, typos, missing details |
FAQ
How long does a Nature2® Spa Stick last?
Approximately 4 months under normal use (up to ~4,000L spas).
Do I still need chlorine or bromine?
Yes, but less. Nature2® reduces the required level. Always use with an approved oxidiser.
Will it stain my spa?
Genuine Nature2® releases silver within safe limits (~0.01–0.06 ppm), minimising staining risk.
Why avoid cheap online copies?
Most knock-offs contain little or no silver, so they do not sanitise and can leave water unsafe.
Buy With Confidence
Choose the GENUINE Zodiac® Nature2® Spa Stick from an authorised dealer for verified silver content and reliable results.
In plumbing, named sizes are not the actual measurements. A pipe called “50mm” or “2"” does not measure 50 mm across. Instead, it follows nominal sizing, an internationally-standardised naming system.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.5 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
These are nominal sizes and are designed to fit matching fittings — not to measure exactly what their name suggests.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate. Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
PVC Pressure Pipe AS/NZ 1477 Dimensions1:
Common nominal sizes with typical outside diameters and indicative inside diameters by class.
| Imperial Name | Metric Name | Outside Diameter (OD) | Class 9 IDº | Class 12 IDº | Class 18 IDº |
|---|---|---|---|---|---|
| 1/2" | 15 mm | ~21.2–21.5 mm | 18.3 mm | 17.8 mm | |
| 3/4" | 20 mm | ~26.6–26.9 mm | 23.7 mm | 22.4 mm | |
| 1" | 25 mm | ~33.4–33.7 mm | 30.5 mm | 29.8 mm | 28.1 mm |
| 32 mm | ~42.1–42.4 mm | 38.5 mm | 37.5 mm | 35.4 mm | |
| 1.5" | 40 mm | ~48.1–48.4 mm | 45.2 mm | 44.1 mm | 42.8 mm |
| 2" | 50 mm | ~60.2–60.5 mm | 55.2 mm | 53.7 mm | 50.5 mm |
| 65 mm | ~75.2–75.5 mm | 68.9 mm | 67.0 mm | 63.2 mm | |
| 2.5" | ~73 mm |
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
Payment & Security
We accept: Visa, Mastercard, Amex, Apple Pay, Google Pay, ShopPay, Paypal, Zip, Afterpay
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.