1kg Calcium Hardness Increaser – For Spa Pools & Hot Tubs

Keep your spa water crystal clear and balanced with our 1kg Calcium Hardness Increaser, specially formulated for use in spa pools, hot tubs, and plunge pools. Maintaining the correct calcium hardness level is essential to prevent corrosion, foaming, and damage to spa surfaces and equipment.

Made with high-quality Calcium Chloride, this product quickly raises the calcium levels in soft water, protecting your spa shell, heater, and internal fittings.

💧 Why You Need It:

• Prevents corrosion of internal components

• Reduces foaming and surface etching

• Protects heaters, jets, and spa shells

• Supports overall water balance and clarity

📏 Dosage Guide (Per 1,000 Litres):

To raise calcium hardness by 10 ppm, add 15g per 1,000L.

Example:
To raise from 100 ppm to 200 ppm in a 1,000L spa, add 150g of product.
Always dissolve in a bucket of warm water before adding to your spa with the pump running.

Ideal calcium hardness range for spas: 150–250 ppm

📦 Product Details:

• Size: 1kg resealable pail

• Active Ingredient: Calcium Chloride

• Suitable for: All spa pools, hot tubs, and swim spas

🛍️ Available Now at Perfect Pools

• Pickup from our Albany warehouse: 15C Douglas Alexander Parade

• Open Monday–Friday 9am–4pm, Saturday 10am–2pm

• Auckland delivery and valet service available

• Email perfectpoolsnz@gmail.com to book an onsite service or get help with water balancing