Tank-Cleaner

Some people shouldn't have fish. As strictly dog-people, my family falls into this category. Yet we have two murky green tanks. My grandma, who also keeps fish, has 5 immaculate tanks. To add excitement to her life, she shifts her fish from tank to tank every couple weeks so that no one fish gets the best or worst tank for too long. Even this does not satisfy her boredom, so, while my family is away, she sneaks into our house and cleans our tanks. Returning home, we find our tanks sparkling, our fish gazing out, shocked by the water's transparency.