Diamond Crystal® Hardi-Cube Red-Out® with Iron Fighter® Formula

• Minimum 99.8% pure salt
• Virtually 100% water soluble
• Uniquely compacted shape for extra hardness
• FDA approved additive helps prevent rust stains on laundry, fixtures, sinks, tubs and bathroom bowls and is considered non-toxic to bacteria in septic tanks
• Reduces rust build up and keeps water conditioning units running longer
• Minimizes mushing and bridging; keeps your water conditioning unit operating smoothly and reduces softener maintenance costs