Is it safe to add to add a flagrance like this in the water of a saltwater inground acrylic spa that spills into a pool? I would add it when in SPA mode, but then of course when I am done using the spa it will dilute with Pool water when in Spillway mode. Can oil damage equipment, e.g., pump , heater, saltwater generator, valves? Would it be safer to use a non-oil based flagrance such as this ? Any suggestion on products you used and never gave you problems?