Btw. saline pool auto-regulation is done with a "chlorinator" problem is that device also only checks the parts per million in the water (and assumes, those parts are salt particles). my pool for example is constanty at avg 3'700ppm , otherwise the chlorinator dosent have enough power for the 10x4x2 swimmingpool. Therefore on ultra sunny days >35degree or after rain you have to add chlorine to the water. Otherwise your pool gets green.