I have a vitaspa with the aromatherapy blower. Supposed to add the little balls in a nylon net into the chamber and turn on bubbler. Is there any substitutes for this stuff, can I find something in Bed, Bath and Beyond, anything to watch for, chemically speaking? Does the bubbler serve any purpose other than to infuse aroma? Thanks any help

The air blower is used to induce a more theraputic experiance in the spa by introducing massaging bubbles throughout the water. The aromatherapy is just an added bonus, and you do not need to use it. Several spa chemical manufacturers make substitutes for this application.