Protect your Marquis Spa against calcium, iron, copper and other metals from your water source! Add 1 full pt bottle initially with fresh water at every spa refill. Wait 24 hrs after adding, once spa has gotten to temperature before
adding any additional products such as sanitizes, pH adjusters or shocks.
For extremely hard water: Adding a few ounces each time you top of with some additional water is recommended. At times, multiple bottles
may need to be used when refilling the spa to prevent mineral build up on the spa surface, jets, plumbing and equipment.