How to I set my hardness setting?

I bought a test kit from Home Depot. Here are the 4 tests it performs and my results…
1) ph(8.5-9.5), alkalinity(240), clorine(0) and hardness(250)
2) iron(0)
3) copper(-0)
4) nitrate(0), nitrate(0-0.25)
I did the test on water coming in from the well.
The only thing that...
How to I set my hardness setting?