Quote Originally Posted by CarlD View Post
It sounds like you either are still fighting something or miscalculated. I can't figure powder amounts--but bleach and LC I can do in my head...

Had you measured the pool an hour after you added the chlorine, you would know what the FC was then and there. If it was 4.5, then by this morning, you lost nothing.

Meanwhile, I don't know where you are but this season, for unexplained reasons, EVERYONE around the country seems to be using excessive amounts of chlorine--myself included. I've had to add a gallon of 12.5% the last two days.
It wasn't powder that we added, it's just that DH uses the scale to measure how much to add, on the presumption that for 6% bleach, since most of it is water, it's of a similar density to bleach, and therefore 1000 grams is about 1000 milliliters (one liter).

We would have measured it last night again, but weren't sure how long it would take for the chlorine to be dispersed. We plan to check the level mid-day today since it is going to be a hot & sunny day here, and then again this evening. We plan to shock the pool Tuesday night, and then again before we leave for vacation.

We are in South MS, about an hour northeast of New Orleans.