---
title: What is Stain & Scale Defense?
description: This product will help you prevent and reduce the scale build-up on your hot tub shell and other equipment.
---

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# What is Stain & Scale Defense?

## This product will help you prevent and reduce the scale build-up on your hot tub shell and other equipment.

![Stain & Scale Defense](https://knowledge.mainelytubs.com/hs-fs/hubfs/Stain%20%26%20Scale%20Defense.png?width=106&name=Stain%20%26%20Scale%20Defense.png)

**DO NOT USE IN A HOT TUB EQUIPPED WITH A SALT WATER SYSTEM**.

Scaling on your hot tub is caused by calcium deposits. Stain & Scale Defense prevents calcium build-up on shell surfaces and equipment by lowering calcium content in the water. Regular use keeps your spa shell and equipment in excellent condition. 

This product protects surfaces and equipment from dissolved metals in your spa.

You can purchase this product at our e-store by clicking [here](https://estore.mainelytubs.com/products/stain-scale-defense-by-freshwater?_pos=1&_sid=95784d28e&_ss=r)!

 

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