I am desperate. I have been seeking answers on this for hours. Our hottub has caused Pseudomonas Aeruginosa rash on my youngest child, despite having the Ozonator replaced as well as the hot tub was drained and filled and then disinfected with betadine. It was drained again, refilled and chlorine and pH brought to specifications. Our child was in it 2 days in a row and now she is covered on her upper chest, abdomen and upper back. It's itchy and it's red and I JUST SPENT A LOT OF MONEY TO AVOID THIS!!! What am I doing wrong?? How can I test for the presence of this bacteria and will this ever go away. I'm a very frustrated spa owner.