|Combined chlorine level is too high
Shock treat with Robarb™ Pool Specialties PowerBlast® or PowerBlast® II shock. Test for free chlorine residual and adjust and maintain a level of 1 -4 ppm.
Test chlorine level daily. Maintain pH of 7.2-7.8, total alkalinity of 80-120 ppm and free chlorine level of 1-4 ppm.