Cannot maintain FC levels w/ BBB

[PoolDoc]

With CYA=100, FC = 8 - 12 ppm would be fine.

If you were in an arid region, and using a DE filter, you could probably go lower. But in Pennsylvania, you'd be risking algae if you did so.

[Watermom]

Please don't think I was 'fussing' at you ------ I wasn't. It's just hard to mix and match advice from multiple forums. I hope that we have been able to answer your questions.

Let us know how your overnight test goes tonight.