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My water dosent get rusty until you oxidize it. Though I did not wait 24 hours after adding metal-Gon until I chlorinated. Just don't understand why it worked for 5 days then allowed the iron to come out. For these first several days had nothing really to rinse off the filters. Is metal-Gon a ortho-poly phosphate blend ?This is a bigger mess than I had on first fill where I just oxidized it and filtered from the start. Did have the issue with it coating all the surfaces then. I just hit it with chlorine then some coagulate and filtered for a few hours and had a clean tub.
I hate to say it but I battled well water for years and finally succumbed to hauling water in from municipal source. If that is at all an option I recommend it highly before you start cursing your hot tub on a regular basis. I tried every chemical regimen out there and never found any consistent sucxess dealing with well water. Good luck.
It is a Jacuzzi J-480 almost 500 gallons, so I very well may have not used enuf as I only used 1 bottle (16oz). I did find that interesting that its didn't say any volumes needed per gallon. I have it set to run a 10 hour primary filter cycle (12am-10a) and a secondary 30 min filter at 4pm. Correct the water from the tap is crystal clear, and the tub stayed crystal clear for 5 days. 13ppm Cl2 on the 1st day 9ppm on the second day. So I would have figured and iron that was (unsequestered) would have came out in that time. The tub is all clear and clean now. Filters cleaned it up in about 24 hours. So you think I should add 2 or more bottles next time?Any idea what exactly the metal-Gon is?