I am developing a brown mark from my ozone outlet, along the bottom of the tub, and up and across the foot dome. What is this and how do I get rid of it? I tried to scrub it off - didn't work. I added stain remover to the water - didn't work. I talked to two dealers and one said he never heard of such a thing and the other only said that it was a reaction between the ozone and the dichlor. He had no idea how to get rid of it. BTW, I filled the tub in early October. I am using Nature2 and dichlor, and I keep my water chemistry where is supposed to be. Any advice in removing and preventing this eyesore will be greatly appreciated.
Thanks and Happy Thanksgiving,
Cack