Sorry it took so long to post, but i have been working on the new books. The first will be chemistry for pools and it’s almost complete.
So as for calcium, this is an often-overlooked chemistry component. Calcium will affect many things in a swimming pool.
Low calcium Hardness will cause; etching, foaming, eye and skin irritation and scale or “creaming” of the pool surface from trying to “pull” calcium from plaster, concrete or from metals in the equipment.
High calcium can cause, heavy scaling, nodes on the surface of pool, deposits and staining.
So, you see why calcium is so important.
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