VinegarApply vinegar to the calcium build-up. Calcium deposits will dissolve when they are exposed to an acid. Vinegar is acetic acid and will help remove calcium deposits. Put the vinegar on a paper towel or sponge or apply it directly. Let the vinegar work in for at least 5 minutes and then rinse with fresh water.Lime RemoverApply a commercial lime remover. These are also acidic solutions and are probably stronger than vinegar. Use rubber gloves when spraying or applying commercial lime removers. Follow the manufacturer’s instructions for using commercial lime removers. In general, they are sprayed on the caclium buildup and allowed to stand for 3 minutes or more. They will foam or bubble as they react with the calcium. Rinse with clean water. Use only in a well-ventilated area.Thick DepositsCrack off thick deposits. Thick, brittle calcium buildup can be removed by slightly bending the plastic pot. Roll the pot on its outside, applying slight pressure with your hands as it rolls. Thi