3/4 Inch Water Supply, 1 Inch Water Softner???

Based upon the hard water at our home (42 grains) I need a higher capacity water softner. I found a softner that seems to be able to do what I need, but it's a 1 inch connection size, and our home has a 3/4 inch supply line.

A couple questions for those more educated than I:

Is there anything wrong with enhancing the line size before the softner and reducing it again once it's through?
Are there any side effects (low flow, not all the water is truly softned, etc.)?

I am planning on getting the softner at the link below (North Star NSTUD1):



Is there any reason I shouldn't get this or do you have a better one to recommend for me? (It's just my wife and I, no abnormal water usage).

Thanks in advance!

It'll be fine...don't worry about it.

IT will work just as good as a 1" softener with 1 1/4" pipe from the wall. All softeners do the same job. A larger capacity one just regenerates less frequently. That unit is rated up to 20 grains so with 42 grains it will regenerate after about every 1,000 gallons of flow.