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I don't use MPS anymore since it wrecked my first batch of water back in August, so I only use dichlor (fresh water from Hot Spring). I've never had a problem with my water since switching to dichlor only. I also wonder about the silver ion's overall benefit since the "active" ingredient is a whopping 1% of silver, with 99% inactive. I have a hard time believing the 1% really does much.
Why don't the manufacturers of these systems warn us about this?
The silver ion has no affect on pH.We tell our spa owners that it works great as an additional measure of protection.It's best used in conjunction with a prefilter that adds the initial dose of silver. By starting with a bank of silver, you're not relying on circulation/ or filtration to build up the residual. In addition, the use of water clarifier can coat the cartridge limiting its ability to errode. Shocking with chlorine does strip the water clarifier from the cartridge.I have a Solana TX. I rely on the silver cartidge to keep my water clear, especially when it goes 3 or more days unused. My early version of the TX wasn't ozone ready. Geez, maybe it's time to upgrade. Hate to take a new one out of stock for myself.
I am also having some doubts about the silver ion cartridges (Nature2). I posted a question in the Water Quality section of this board due to conflicting advice I had recieved from two different people at my dealer. The upshot of this seems to be that there is an inherent conflict between using siver ion cartridges on the one hand, and using MetalGone or Stain & Scale for metal control in your tub. It seems that the metal control chemicals negate whatever beneficial effects the silver could have on your tub. So if you use these products together, your just wasting your money on the silver ion cartridges. Based on what Dr. Spa and Waterbear say in my other post, it makes perfect sense that, chemically, this would happen.Why don't the manufacturers of these systems warn us about this? CORRECTION: I posted about this issue in the Water Quality section of the Pool and Spa Forum.