I have operated my personal spa for over thirty years and with the helo if the SpaDepot I have never had any problems keeping the water clear, clean and fresh. Recently I decided to use some of the aeromatic additives that they offer, just to make life more interesting. I have never used anything but chlorine granules and shock treatment prior to this. What I have found using the Spazazz Rx Sleep Therapy is that at first it has a very pleasant aroma of lavender but the next day the aroma has worn off and left behind a not so pleasant chemial odor. This odor stays around for about three days after the initial lavender aroma disappears. I am also finding that for the first time eve,r I am getting some sort of wax build at the waterline. It has to be something in the Spazazz Rx product, as I have changed nothing else about the way I use the tub and have had no guests or used any skin products such as oil or ointments. I have quit using the product as it makes using my spa a very unpleasant experience.