We purchased a new Marquis spa and have had trouble keeping it clear and balanced. Not at first, but gradually I began to really feel affected by the chlorine smell (ours was a bromine system by bull frog) I would get congested and then cough for days after use. It felt like the chemicals were burning my lungs. But we also has a foaming film which I now believe to be biofilm, so we are going to decontaminate and sanitize then rebalance. My question is for ongoing maintenance, I wanted to ask if anyone has any experience with IONRX product which is a copper based product used in conjunction with chlorine. The reviews are 5 stars and everyone claims little chlorine fumes and easier to keep clear water. This is recommended by Dr Weil as a less chemical way to maintain clear water.