My folks have an inground pool (i think its under 20k). They are sick of the chlorine so their pool guy installed a salt system but still the chlorine bothers them as they are sensitive to it. I know of inoziers and ozonators that require a fraction of the amount of chlorine (according to their brochures). I have tried in vein to search on the site for the answers but the only response i seem to get is that ozone is overkill. These guys are willing to spend the money to reduce or eliminate chlorine. What do you guys recommend??