I have been using bromine until draining the tub about 6 months ago. I want to transfer to the salt water system, what is required? Do I just clean out the tub, refill it with salt and toss in the probe?

You are on the right track with your description. You would still balance the pH of the water, that is important. The ?probe? has the titanium plates inside. The conversion from sodium chloride to chlorine happens there. You will find the water has a very soft feel to the skin. The salt does not disappear unless you splash water out of your tub and have to add water, thus diluting the salt. Otherwise, replace the salt when you change the water. You may want to start with one of our salt kits, at least for the first setup.