We have well water which is hard. At present we have an iron filter and water softener. Lately the sulfur smell has been getting to be too much. Our water system person has recommened a Katalox system without a water softener. Since this is an expensive upgrade. I am looking for an opinion, preferably from someone who has experience with the system. Will it get rid of the sulfur smell and still reduce the amount of iron in the water? Will a water softener still be necessary?