I slammed my pool about three weeks ago. Had everything perfect. Then we had rain for a week, so the pool was neglected. (We have an automatic, non permeable cover, so when it rains, I can't get to the pool without clearing the water on the cover first, which doesn't make much sense when it's raining.) When I finally got to it, my previously crystal clear water was cloudy and slightly blue-green (again). Tested. FC was .5, CC is 0. I've tried bringing the chlorine back up to 5, but the pool isn't clearing, and while the CC is staying at 0, the FC isn't rising either.
I assume that means I need to slam again? If so, will the process go quicker this time? There's no visible algae. Just cloudy water.
Back-up question. I'm waiting for a new SWG cell to arrive so I can turn that system on. In the meantime, do I really need to test the water daily even when the pool is covered and not in use? Is it normal for the FC to disappear even when not exposed to sunlight?