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Oh, you're residential.
I am familiar with industry use only. Since you are in Calgary, I'd refer you to Terra Water Systems (division of Precision Drilling)
4208 118th Ave SE
Calgary, Alberta
Canada
T2Z 4A4
403-203-2796
Talk to their technical sales dept. and they will be able to give you the whole breakdown of resin-type softening vs. nanofiltration (membrane).
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