I haven't had the water tested recently but when it was tested the hardness was, 21 GPG, Iron 7 PPM, sulpher 1.0. That was all that was tested. Yes I'm getting a lot of orange rust in the toilets and sinks, the water turns orange within minutes. If I take the head completly off the tank, how do I keep the riser tube from coming up with the head. Any suggestions on what might be wrong and what to look for. Do know what kind and amount of resin media I need and does it use a gravel bed. Dennis





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