You know what this reminds me of.....I too have a neptune and I decided one
day to plug the serial interface into my pc so I good use the aquanotes
software with it. When I pluged the serial into the PC my readings went all
outta wack (pretty much what you described) it turns out there was a ground
loop through the power. maybe the ORP probe is just simply bad? or maybe the
probe has a short in regards to the ground or something?
Can you take the probe back and try a 2nd one?
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Shane Clays
Sent: Tuesday, January 09, 2001 2:30 PM
To: '[EMAIL PROTECTED]'
Subject: Probes and stuff...
Hi everyone. I remember a thread going around a while ago, but do not
remember if there was any resolution so I am going to ask again...
Last week, I got a new ORP probe for my Neptune. So I go home all happy that
I am now going to be able to monitor my ORP. So, I plug it in and while I am
waiting for it to reach equilibrium, I go about doing a couple of mainanence
chores with the tank. Well, about 3 minutes later when I look back at the
Neptune display, my ORP is 114 and my pH is 7.2. Not sure, but I think with
that, all of my animals should have been dead. So, I unplugged the ORP
probe and when I did so, the pH reading immediately came up to 7.9 (normal
for me). When I plugged the ORP back in, down went pH reading.
Then I unplugged the pH probe, and the ORP went up. So, basically, is what
happens is when both plugs are plugged in, both readings are very low, but
if I unplug either of them, then the reading of the other goes to normal.
Does anyone have any suggestions or reasons why this happens and any
suggestions on how to get both probes working correctly??
TIA
Shane C.
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