July 5, 2013
Hello guinnessandme and thank you for your question.
Drilling additional holes in the Pegasus Dual Mount Granite 33x22x10 1-Hole Large Single Bowl Kitchen Sink in Metallic Black (Model # WC10MB) is not recommended. Can you mount the additional holes into the countertop decking?
Daily cleaning may be done with a non-abrasive cleaner such as Softscrub - with or without bleach), Bar Keepers Friend, or baking soda. Rinse well.
As for calcium deposits (a white ring around the bottom of your sink), use Lime Away or a comparable product. If stains become ingrained in the bowls, an overnight soak using diluted bleach (10:1) will help remove stains. RINSE WELL. Use of strong chemicals, abrasive powders, and steel wool pads will degrade the surface and make the sink more susceptible to stains.
Best wishes on your project.
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