How to remove hard water stains from tub

Nancy Magee
by Nancy Magee
I'm not talking just around the handles of a tub. I live in an apartment that had a hot water leak in the tub . Not a little leak either. The hard water has climbed up the whole side of the tub almost half way down. It really big and really nasty looking. I've tried a mixture of dawn, vinegar, baking soda but it barely touched it. Any ideas?

  5 answers