Hi, I'm a newbie. I have been reading all of the info on here so I have already learned alot. I only have a 3-way test strip right now; FC, pH, TA ...I'm going to go buy a new one here shortly. But right now my levels are reading 0 FC, 7.5 pH, and 180-240 TA. What should I add this morning so that we can still swim today? So far the only thing I've added to the pool is chlorine tablets and shocked it 2 days ago, yesterday the FC was at about 2. How often and when should I run the pump? It says not to run it while swimming, yet I've read it is best to run it in the day, which is when I swim of course.