I see a hard, whitish build-up on the glass and equipment. What is it and how do I remove it?

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    Marianna Eros

    I have the same problem with my freshwater aquariums.  We have really hard water and everything seems to get splashed by the filters.  Is there any way to prevent that from happening?  I cannot take the lid off of my 10 Gal tank, so I use the vinegar on a paper towel carefully so that nothing goes into the tank.  I've put paper towels in the areas that have the white mineral deposit, but they just get wet and then drip down the outside.  It would be great if the surfaces didn't get splashed.  Thank you

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