I need to replace my kitchen sink old tap. My current one has a big base, 19 mm circumference and I've been looking for a tap of the same size. There is a lot of limescale around it and if I replace the tap with something with a smaller base it would not look good. I could remove some limescale but not all of it I suppose. The majority of taps I've seen have a smaller basis, 15 mm, 17 mm at the most. It's an IKEA one but they don't do a similar model anymore. Any advice? Would the limescale go, and would me take long to clean it off? Don't want to replace the tap if the job doesn't look good. Many thanks.