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View Full Version : ORP Probe- How long to settle down?

RacerX308e
05/26/2006, 07:06 AM
How long does it take for the ORP probe to settle down and give a correct reading? 24 hrs later and the probe reads 105!
elephen
05/26/2006, 07:41 AM
~ 1 Week
RacerX308e
05/26/2006, 07:51 AM
Thank you very much.
RacerX308e
06/01/2006, 06:28 AM
My ORP reads 235 after a week. Should I worry? The tank looks normal with no problems.
ZoeReef
06/01/2006, 11:22 PM
Mine is reading 297 after three days. I'm a newbie also..
RacerX308e
06/02/2006, 05:48 AM
Yours has gotten up quicker than mine. Close to two weeks and mine is 250. I'll give it another week before I panic.
Aquaduck
06/02/2006, 07:14 AM
After a week you will need to clean the probe with a soft toothbrush or you will get false high ORP readings. Once a month mine gets a vinegar scrub bath.