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I don't think the spa N2 cartridge contains copper either...silver and zinc I believe.
You're right Tony. I just read the Nature 2 website and sure enough N2 Spa uses zinc and silver. While N2 Pool uses silver and copper. I wonder how the copper is getting into my water? Have you been following this thread? What's your take on my problem?
Thanks Tony.The guy at Leslie's said that the Spa Metal Free product he sold me, does the same things as Metal Gone and more. Is this accurate or should I go buy a bottle of Metal Gone? There's quite a significant price difference. Metal Gone -$7 Spa Metal Free -$18.
Spa Metal Free looks more like a stain and scale product like LT's Defender. It is something that you add weekly (priced like Defender also). Metal Gon is added only when you drain and fill. You add the whole bottle. It sequesters the metals rather than remove them. I would use the Metal Gon next time you fill. Use the Spa Metal Free weekly...it won't hurt to use both.
If it is an ozonator problem...why did the spots disappear for quite a while?
Chad,When you looked at the ozonator's hose that went to the injector was there a loop that went above the water line? This is called a hartford loop, by all accounts it should be a large loop and the tops of it should be above the water line. This picture shows a little loop but it shouldn't matter for air. I have seen pics where the loop may be a foot or more in diameter.If you don't have this - do it. There would be no way for ozonator gunk to get into the spa if it had to go up a large loop. I would do it such as a cursive ( vs printed) lower case "L" with 2 loops in the center.