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.
Test and adjust your pool to these levels: Free Chlorine: 1-3 ppm, pH: 7.2 â 7.6, Alkalinity: 80 â 120 ppm and Calcium Hardness: 200 â 400 ppm. Proper water balance in your pool is crucial to keeping clean water and staying algae free.