BioGuard Shield 450g

BioGuard Shield – Calcium Hardness Increaser for Spa Pools

Protect your spa and extend its lifespan with BioGuard Shield, a high-quality calcium hardness increaser designed to raise calcium hardness in spa pools and hot tubs. Low calcium levels can lead to corrosive water, causing damage to spa surfaces, heaters, and plumbing. BioGuard Shield restores proper balance by increasing calcium hardness to the ideal range, especially important for soft water areas in New Zealand.

This fast-dissolving calcium hardness increaser is easy to apply and works quickly to stabilise water conditions. Suitable for use in all spa types, it helps prevent scaling, surface etching, and equipment corrosion.

Packaged in a 450g container, BioGuard Shield is perfect for routine spa maintenance or after a fresh water refill.

Benefits of BioGuard Shield:

• Effectively raises calcium hardness in spa pool water

• Prevents corrosion of spa components and surfaces

• Maintains balanced, comfortable water conditions

• Fast-dissolving and easy to apply

• Ideal for soft water regions or after water changes

Why choose BioGuard Shield?

• Trusted calcium increaser for spa pools and hot tubs

• Helps protect and prolong spa equipment life

• Supports complete water balance for safer spa use

• Supplied in a convenient 450g pack

• Made by BioGuard – a leader in spa water care