The resin in my RO/DI unit has started to change color, but my tds meter is still reading 0. Should I changed out my filters now or when the tds meter starts reading higher than 0?
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Though it depend on the configuration of your rodi. Role of thump you should change when tds is anything but zero.The resin in my RO/DI unit has started to change color, but my tds meter is still reading 0. Should I changed out my filters now or when the tds meter starts reading higher than 0?