Dramatic pH drop in filtered H2O?

[khyberkitsune]

That seems like a big drop,and to 5.8 seems even stranger.You are using a meter right? not some test papar strips. those papers are so EASILY contaminated.

What was your last filter puting out for Ph? Let us know what it does after 20-30 gal of use.

Daddy

I use liquid reagents for pH testing. I don't use paper, and meters require constant calibration.

I wasn't using ANY filter, at all, ever, until now.

khyberkitsune Reviewed by khyberkitsune on 05-19-2010. Dramatic pH drop in filtered H2O? I picked up a fresh Brita water filter yesterday, and have been using it to do some minor water treatment. I noticed something - the pH drops from about 8.5 to a near-perfect ~5.8 just going through the filter. Does anybody else experience this? I typically just use straight tap but I'm willing to roll with a water change, and at least filter it before adding nutes. Looks like if this keeps doing what it does, all I have to do is add nutes after filtering, no pH down required! Rating: 5