FC relationship to PH

Britmandogs

Well-known member
Jun 1, 2010
58
I recently increased my FC level from 3ish to 5 or 6 due to warmer weather (more FC loss) and storms we've been getting. My PH b4 the increase was normally 7.3 to 7.4, now its 7.2. Could the drop be a result of increased FC level or from rain water addition?

FC = 5 to 6
PH = 7.2
TA = 120
CYA = 30, though I'm working to increase to 40, just added some stabilizer
 

J20832

LifeTime Supporter
Jul 3, 2009
218
Olney, MD
The PH is probably just dropping because your stabilizer is dissolving. If you are using trichlor or dichlor to increase your FC, either one would also drop your PH.
 

Britmandogs

Well-known member
Jun 1, 2010
58
BBB all the way, should I wait for the stabilizer to disolve b4 adjusting ph or will ph come back up?
 

257WbyMag

TFP Expert
LifeTime Supporter
Feb 23, 2008
5,061
Denton, TX
It's likely due to your recent addition of CYA.

7.2 is still fine. Some swimming and splashing should help it. If you see the pH go lower, you can consider some aeration. Typically, with bleach as your chlorine source, the pH will rise in time, as long as you steer clear of stabilized sources of chlorine.