🚚 Limited free delivery on orders over $120* 📍 Click & Collect 🚀 Australia's No.1 Destination for Robotic Pool Cleaners shop now

🚚 Limited free delivery on orders over $120*

Clark rubber logo

What causes scale build-up in pool water?

Scale occurs when minerals in the water (especially calcium) crystallise and stick to surfaces. This is commonly caused by high pH, high calcium hardness, or warm water. Scale can build up on pool tiles, walls, heaters, and chlorinator cells.