Paul - Montreal

Hi; This is the 3rd season we have had our spa (it came with the house when we moved in) and up until this year I have not had any problems at all. However, over the past month I have developed a really itch allergic reaction to something in the water - mostly on my chest, upper back, torso and a few spots on my legs. My Dr. told me to take a shower after the spa and use plenty of soap but it's not really helping much. We use the spa most days but I'm at the point of wondering if my spa days are over . For sanitation we have a UV unit which we replaced a couple of years ago and we used bromine pucks which are in a floating dispenser in the spa when we are not using it. We check the pH and the bromine level each day and adjust the flow through the bromine dispenser as necessary to keep the bromine level where it should be. Are there alternatives to Bromine that I should consider or could it be something else Any feedback at all would be great. Thanks Paul