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Nope, no Baqua Spa. I am using Nature 3.. Ozone, Silver Ion Dichlor, and MPS once a week.
Rich- My water is now a week old... and I am no longer getting the brown line... This fill up was the first time I used Metal Gon.... so I just assumed that meant I would not have the problem.... I guess not! I fill up with my well water... which is very soft... I have to add a whole bottle (32oz) of water hardener!As for the Baking soda.. how does that effect TA and PH? I have been using a tub mitt to scrub the line... but I am thinking something to help would be nice!