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I've used this ozone generator for my water for a couple of years now & the machine has held up well. The water where I live is so nasty I have to filter it before I use the Ivation for another round of filtration. The problem comes when I have need an extra rubber hose because the funk & mineral filtered through is so thick I need to replace that before I need to replace the white or grey filters. An extra hose would be highly recommended for this replacement set since water quality is so nasty these days.