Turning off electrical devices with ph meter

[zanguli-ya-zamba]

Hi guys I have read on barr repport forum that electrical devices (pump lights etc) can interfere with the reading of ph when using a electronic Ph meter.
So I wanted to know if any one here turn off all electrical device when doing the ph reading.
As it is on Tom forum I think it s a good tip to note !!
I will try a reading with power on and power off.
Please let me know if some one have already notice something about that.
Cheers

 

[geoffbark]

I personally don't get a difference in reading when electrical is on or off. But I know flow effects ph reading. So if you take your reading in static water and then in high flow from filter you should get a different reading. Hope this helps.