Pool Stabiliser Cyanuric Acid 1kg | Chlorine UV Protector
Chlorine burning off too fast in the NZ sun? Pool Stabiliser (Cyanuric Acid) is the essential conditioner that shields your chlorine from UV degradation, keeping it active in the water for longer, reducing how often you need to dose, and cutting your chemical costs significantly.
Without stabiliser, unstabilised chlorine in an outdoor pool can lose up to 75% of its effectiveness within just 2 hours of direct sunlight. Cyanuric Acid acts as a sunscreen for your chlorine, binding to it and protecting it from UV breakdown while still allowing it to sanitise effectively.
Product Specifications
| Active Ingredient | Cyanuric Acid |
| Size | 1kg |
| Target Range (Chlorine Pools) | 30-50 ppm |
| Target Range (Saltwater Pools) | 60-80 ppm |
| Dosage | 1kg per 30,000L raises CYA by approx. 30 ppm |
| Suitable For | Outdoor chlorine and saltwater pools (not spa pools) |
| Packaging | Resealable moisture-resistant pail |
Key Features
- Cyanuric Acid Formula. The industry standard pool stabiliser and conditioner.
- UV Protection. Shields chlorine from UV degradation, extending its active life in the pool.
- Reduces Chemical Costs. Less frequent chlorine dosing needed when stabiliser is correct.
- Long-Lasting. Cyanuric acid is stable and only lost through splash-out and backwashing.
- Suitable for Saltwater Pools. Essential for any outdoor pool using a salt cell chlorinator.
Dosing Guide
Initial Dose (to establish stabiliser level):
- Add 1kg per 30,000L to raise cyanuric acid by approximately 30 ppm
- Pre-dissolve in a bucket of warm water before adding, cyanuric acid dissolves slowly, allow 10-15 minutes
- Add near a return jet with pump running
- Allow 24-48 hours of full circulation before testing
Top-Up Dose (maintenance):
- Test monthly and after significant water loss from backwashing or splash-out
- Add in small increments, cyanuric acid cannot be easily removed once added (only by dilution)
Important: Never add cyanuric acid directly to the skimmer, it can clog the system. Always pre-dissolve in a bucket first. Test before dosing, over-stabilisation is difficult to correct and requires partial drain and refill.
Recommended Accessories
- 5-in-1 Test Strips - test cyanuric acid, chlorine, pH, and alkalinity before and after dosing.
- Crystalline Chlorine 4kg - pair with stabiliser for maximum chlorine efficiency.
- pH Increaser (Soda Ash) 4kg - keep pH in the ideal 7.2-7.6 range for maximum chlorine effectiveness.
- Alkalinity Increaser 4kg - stabilise Total Alkalinity for consistent water chemistry.
Frequently Asked Questions
Q: Do I need stabiliser if I use Crystalline Chlorine (Dichlor)?
A: Sodium Di-Chlor (Dichlor) is already stabilised, so regular use will gradually build up cyanuric acid levels. Test your stabiliser level before adding more, you may already be in range.
Q: Do I need stabiliser in a spa pool?
A: No, cyanuric acid is not recommended for spa pools. The higher water temperatures and smaller volume make over-stabilisation a risk. Use unstabilised chlorine in spas.
Q: How do I know if my stabiliser level is too high?
A: Above 80 ppm, chlorine becomes less effective even at correct levels. The only fix is to partially drain and refill with fresh water to dilute the cyanuric acid.
Q: How often do I need to add stabiliser?
A: Cyanuric acid is very stable and only lost through water loss (backwashing, splash-out, rain overflow). Test monthly and top up as needed, most pools only need 1-2 treatments per season.
Q: Is this safe for saltwater pools?
A: Yes, saltwater pools benefit greatly from stabiliser as the chlorine produced by the salt cell is unstabilised and highly susceptible to UV breakdown. Target 60-80 ppm for saltwater pools.
Pickup and Delivery
Perfect Pools Service Warehouse - 15C Douglas Alexander Parade, Albany, Auckland
Hours: Mon-Fri 9am-4pm | Sat 10am-2pm
NZ-wide delivery available. Charges calculated at checkout.
Questions? Email perfectpoolsnz@gmail.com or visit our contact page.
