Canadian Spa Company “Stain and Scale Control” – 500 ml pack
Great for those with hard water. Helps to protect your spa's heater element, jets, and other parts from calcium build up which can damage your spa, reduce efficiency, and impair performance. 
TIP: Using this product regularly could save you a fortune in repair bills that are often not covered under warranty.
 
 Stain and Scale Control - Toxicology Report


For chemical help, please refer to our spa chemical guides:

Spa Chemical Guide   Chemical Common Questions