Posted by JAMES D. HARROP on April 23, 1998 at 15:35:42:
THE TUB IS BOWED, SO THE BACK HAS SOME RESIDUE WATER AFTER A BATH. ALSO THE SINCE THE TUB IS BOWED, WATER GETS IN THE AIR PASSAGE WAYS AND DOESN'T ALL DRAIN OUT. THEREFORE, YOU GUESSED IT -- NASTY BLACK SCUM COMES OUT OF THE AIR HOLES. MANUFACTURER WENT OUT OF BUSINESS 8 YEARS AGO (NO WONDER). BOUGHT THE HOUSE NEW AND NOW WISH TO SELL IT. HAVE COVERED UP THE HOLES AND NOT USED THE SOOTHING AIR BUBBLES FOR THE LAST 6 YEARS. ANY SUGGESTIONS BESIDES GETTING A NEW TUB?