Hi. We just ordered our hot tub and it should be delivered in 2 weeks (a Vita Spa Cabaret). I've read all the posts here and on the Ask Dr. Spa BB about water maintenance and initial set-up, which have been very helpful. However, we are on well water and I'm not sure if I need to take additional steps beyond what most folks need. We have alot of iron in our water. We do have a filtration system for the water in the house, so I definitely will fill the tub with water from the house, as opposed to that from the outside faucets (which is directly from the well and doesn't go thru the filtration.)And since we have a filtration system, but not a softener, I think I should be okay. But will the Metal Gone be sufficient or do I need to do something else, like buy one of the filters that you can attach to the end of the hose? I don't want to end up staining the shell or clogging up the plumbing system with the iron. Thanks for any help!