Quote Originally Posted by stcohen View Post
pH 8.0, FC >>>5
How high is the FC? Is there any CC?

Lower pH to what level? Do I want Fe back in solution? What would that do to captured Fe in filter?
I would wait until FC drops back to 5 and the filter must be backwashed then backwash, bring pH to 7.6, replace DE, start chlorinating with cal-hypo again.

Felt like filter couldn't capture/hold Fe until flow decreased significantly.
I agree, this is good.