Cara's Pool School — scale

Scale (usually seen as white, crusty deposits) can form because of high pH and/or Total Alkalinity levels combined with calcium in the water. Although most noticeable on or at the waterline, scale deposits can also form inside plumbing lines and potentially cause issues with water flow; which may lead to premature wear and failure of equipment. Routine use of an effective scale control product -- sometimes referred to as a sequestrant or chelant -- can make a notable difference and impact on the frequency of cleaning due to deposits and build-up, while also protecting your investment in your pool surface...