Natural Chemistry Spa METALfreeMETALfree prevents staining and damage to your hot tub that can be caused by trace metals in the water such as iron and copper. This product is a chelating agent that works by keeping metals in solution so they are unable to stain spa finishes. It does not physically remove the metals from the water and therefore will not affect metal readings on your water tests. Spa METALfree features: Prevents staining and discoloration caused by metals in the water Chelates copper, iron and other trace metals Improves water clarity Phosphate free formula 33.9 Ounce bottle Dosage Amounts: Initial Dose - Add 4 ounces per 400 gallons of hot tub water after initial fill and after each drain and refill Weekly Dose - Add 1 ounce per 400 gallons of water each week
