5 things you have to know about German guys: 1. They are responsible. Of course Iâm generalizing in all of these points. But every generalization is partly true. They like having fun, but only when itâs appropriate. If you come from Latin lands and shout when talking, youâll scare him.
The ideal range for calcium hardness is 250-350 ppm. If the calcium hardness is too low, the water becomes corrosive and results in the etching of the pool's surfaces. Metals corrode - and this includes pool equipment, pipe fittings and pump connections. As a result, the pool's walls and floor can stain.
%20CCR.PDF. (Note that total hardness is reported in ppm CaCO3, while calcium and magnesium are reported in ppm calcium and ppm magnesium. In this example, magnesium contributes about 16 % of the total hardness and calcium contributes about 84 % of the total hardness.) This is just from your fill water, and the levels will be different based on what chemicals have been added, such as calcium chloride, calcium hypochlorite etc.