We got our brand new Sundance Cameo last Saturday. Used start-up chemicals per Dealer instructions. Took showers, wore clean suits and soaked Saturday night. Sunday morning there was a smelly BLACK GREASE ring around the tub. Took water sample and sample of grease to dealer. They immediately said "It's your water." However, we had the water tested before the tub was even delivered. I even used a Freshwater filter to on fill to make sure the water was as clean as we could get it to begin with. Used bromine and other chemicals per dealers instructions. After a week of trying to adjust the chemistry which kept turning up no bromine, no hardness, really high pH we were still getting the black gunk, plus smelling it more strongly when we turned one of the diverter valves. It clearly smelled like some sort of machine oil and felt like it, too. The dealer came out yesterday. We put clarifier for a 6,000 (yep) gallon pool. She removed diverter valves and wiped out around those, but no black gunk. We also have LOW flow through the filter. The dealer has ordered some spa flush stuff (i.e. soap) that will be in TUESDAY. We will then run that and then have to refill after only 10 DAYS. The water has cleared somewhat, but only after a total of what should clear 9,000 gallons. Its a 450 gal tub. In short, we have the EXXON VALDEZ of spas!!! Has anyone else ever got a new tub in this condition??? We are not new to this. We had a spa before and always had sparkling water (same home location, same community water system) with almost no effort. Sorry for length of this, but am steamed!! Although not literally, cause we can't use the tub!!