I have no experience with well water so can't help you much. 10 is high but if it's drinkable- maybe it is fine after ph adjustment. If you had a meter to test ppm would be good.
Or to find out for sure- try growing some plants with RO and some on well water and see.
You probably don't need to add calmag when using the well water.
Or to find out for sure- try growing some plants with RO and some on well water and see.
You probably don't need to add calmag when using the well water.