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  1. General Reef Discussion
    Hi, I live in a city with very hard water. I have a Kenmore water softener. The softened water is very salty and has a TDS of 850 ppm. This water is then filtered by a 5 stage RO/DI filter with filmtec membrane manufactured by Air Water and Ice. I just changed the filters (not the membrane)...
  2. General Reef Discussion
    So I finally broke down and bought a ro/di unit. The quality of the tap water around here has dropped off abysmally. So I shelled out for a Vertex Puratek 100GPD Deluxe unit, mainly for the low waste (my biggest complaint against RO). However the instructions, which are lacking, say to not use...
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