This is my first post on this board. We have had our old fiberglass tub for several years and after trying every bromine/ clorine product on the market we finally discovered Baqua Spa and have never been hapier (except that we cannot buy it in Canada and have to go to the states once a year for supplies). I have noticed over the past year we are getting a scale build up on the surface of the tub. The last time I drained it I tried to scrub the walls with CLR but it did not remove much. Is there something to add to the water that will gradually remove scale or is the only answer to use a sander Thanks for the help and happy tubing
