My Levels were as follows this morning:
FC = 0
PH = 7.6
CYA = 75
Water was cloudy, could not see the bottom. FC had been zero for over 24 hours and the cloudiness was only getting worse, even though I was running my SWG at 100%. I took a cup of water to the local pool store and they told me that my levels looked good except the FC = 0, just like I thought. I added 4 Gallons of shock per there instructions, within 1 hour my pool turned from cloudy to green cloudy? Why would adding shock make my pool turn green? I called the pool store they said my pool was probably already on the verge of turning green. They said wait an hour or so and it'll start to get better.