I have .62ppm copper--allowable level for action to be taken is 1.3
I have 4 ppb lead-------allowable level for action to be taken is  15
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17.2 ppb=nickel
5.4 Â ppm=sodium
15 ppm=sulfate
This is what I have in my water per my city's 2005 water report. Â Is Sulfate related to iron somehow?
It's got to be some kind of off-gassing or chemical reaction from the ozone or the heat or both or something. Â I use Metal Gon. Â The stain is up above the water on the bottom of the spa blanket. Â
I do not have any brown slime or stain anywhere on or in the tub or drain. Â It is above, on the blanket. Â
I am still in one , in good health and am not quite blind Â

so this is not a HUGE deal--just a curiousity that no one has been able to give me a factual, straight answer for. Â There has been some speculation, but no real answer and I am just curious, that's all. Â Maybe no one knows.
However, maybe I shouldn't be breathing in the hot tub if the air coming off of it, and the bubbles popping and circulating throughout, Â contain poisonous, brown stain causing gasses!!

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I've only had the tub for 3 1/2 months. Â Maybe the ozone is NOT working correctly if I have a brown stain directly above it on the spa blanket. Â Maybe there is a problem with the heater and it is really smoke and something is slowly melting 24/7. Â

Okay, I'll stop now, and Sorry Gomboman Â

for jumping in on your thread. Â I was assuming that some others would read YOUR post that may NOT have read one of mine a while back concerning this issue, and that perhaps by re-visiting it, I would get an answer. Â
