concentrated on keeping the visible parts of the toilet clean. The bowl was scrubbed regularly, the exterior was wiped down, and commercial bathroom cleaners were used whenever stains appeared.
Yet something continued to seem wrong.
Despite routine cleaning, discoloration remained around certain areas, and the toilet did not always seem to flush as efficiently as expected. The tank, however, was rarely inspected. Because the lid concealed the interior, it was easy to assume that everything was functioning normally.
Eventually, curiosity won.
After learning that mineral deposits can build up inside
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