Baking Soda is my new religion.  Its magic!! Make a simple paste with water.  50/50.  Put it in a squirt bottle, the amount of ways you can use it is countless.  I wash my hair with it, my face and never have the grime in my shower floor anymore. 2 in 1 : A  clean shower as a bonus!!  Ke ching.  Its a excellent water spot remover.  Your taps and stainless will shine like brand new again.