Crystalline Chlorine 10kg | Sodium Di-Chlor | Pool & Spa Sanitizer

The best value chlorine for serious pool owners. Crystalline Chlorine 10kg is the bulk pail choice for NZ pool and spa owners who want crystal-clear water all season without constant reordering. Fast-dissolving Sodium Di-Chlor that works immediately, stays effective under the NZ sun, and handles both pools and spas.

Product Specifications

Key Features

• Fast-Dissolving Formula. Works within minutes of application, no pre-dissolving required.
• UV-Stabilized. Resists UV degradation so chlorine stays active longer in direct NZ sunlight.
• Dual-Purpose. Suitable for both swimming pools and spa pools.
• 10kg Bulk Pail. Resealable, moisture-resistant container for safe long-term storage.
• Best Value Size. Lowest cost per kg across the Crystalline Chlorine range.

Dosing Guide

Swimming Pools - Shock Dosing:

• Add 500g per 20,000L of pool water
• Raises chlorine by approximately 1-2 ppm
• Apply in the evening or early morning for best results
• Run pump for at least 4 hours after dosing

Spa Pools - Initial Fill:

• Add 80g per 1,000L of spa water on first fill
• Maintenance: 1 teaspoon per person per use, or 1 tablespoon per week if used infrequently
• Always test water with strips before and after dosing

Available Sizes

• 1kg Pail - ideal for spas or top-up dosing
• 2kg Pail - great for smaller pools or regular spa maintenance
• 4kg Pail - most popular for regular pool owners
• 10kg Pail (this product) - best value for large pools, frequent use, or stocking up for summer

Use in Combination with Trichlor Tablets

Crystalline Chlorine works well alongside Trichlor Tablets for a complete pool sanitization system. Use Trichlor tablets in a floating dispenser for slow-release ongoing chlorination, then use Crystalline Chlorine for shock dosing after heavy use, rain, or when chlorine levels drop quickly.

Safety and Storage

• Store in a cool, dry place away from direct sunlight
• Keep away from children and pets
• Do not mix with other pool chemicals
• Always wash hands after handling

Recommended Accessories

• Trichlor Tablets 5-pack - slow-release ongoing chlorination, pairs well with Crystalline Chlorine.
• 5-in-1 Pool and Spa Test Strips - test chlorine, pH, alkalinity, and hardness in seconds.
• pH Increaser (Soda Ash) 4kg - keep pH in the ideal 7.2-7.6 range for maximum chlorine effectiveness.
• Alkalinity Increaser 4kg - stabilize Total Alkalinity for consistent chlorine performance.

Frequently Asked Questions

Q: What's the difference between Sodium Di-Chlor and Trichlor?
A: Sodium Di-Chlor dissolves faster and is pH-neutral, making it ideal for spas and regular pool dosing. Trichlor is slower-dissolving and better suited to tablet feeders for ongoing pool maintenance. Many pool owners use both together for best results.

Q: Can I use this in a saltwater pool?
A: Yes - Crystalline Chlorine can be used to shock a saltwater pool when the salt cell isn't keeping up, such as after heavy rain or high bather load.

Q: How often should I shock my pool?
A: Shock weekly during summer or after heavy use, rain, or if water looks cloudy. For spas, dose after every use or at least weekly.

Q: How long after dosing can I swim?
A: Wait until chlorine levels drop to 1-3 ppm, typically 4-8 hours. Always test before swimming.

Q: How long will a 10kg pail last?
A: For a 50,000L pool shocked weekly at 500g per 20,000L (1.25kg per shock), a 10kg pail lasts approximately 8 shock treatments. For spa maintenance at 1 tablespoon per week, a 10kg pail will last well over a year.

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.