How to determine what size Fleck softener is needed

[John19]

I've read good reviews on the Fleck water softeners, but I'm totally in the dark on what size to get... specially since I would have to install it myself, etc.
I hope to get our water tested Monday, so I'll know more then.. We have 7 ppl in our family atm.
Is there a chart somewhere that could help me out? (I've read some pages about the grains in capacity (like https://www.aquatell.com/pages/how-to-properly-size-a-water-softener), but they totally confuse me...)

Any tips/advice would be greatly appreciated.

 

[Reach4]

What is the hardness of your water? That is a big factor. City water or well water? If well water, how much iron?

 

[Sponsor]

 

[ditttohead]

https://view.publitas.com/impact-water-products/2018-catalog-final/page/57

Simple sizing guide.