Thank you for the reply. I'm going Walmart after work tonight to get a test kit and bleach. The pool company just used strips to test, so I didn't put much weight on what there readings were anyway. They left them lay on the pool deck so they all got ruined by a shower of rain. I let the pump run all night and through a solar blanket on as well. Tonight I'll check what kind of chlorine tabs they put in. They put a half can of dichlor to shock the pool when they fired the pump up. I thought I remembered reading that you shouldn't use dichlor. The pool is 16000 gallons, how much bleach would one use approximately to shock?