Lights are affecting pH monitor

Drewcipher

Premium Member
So I have an electronic pH monitor and it reads 8.x in all 3 tanks I have when lights are off. In one tank though, when the lights go on it shows the pH at 2.5. Lights go off and the reading goes back to 8.x. I figure it is maybe some stray voltage, but I can't measure any with my multimeter. Strangely in that tank, when the lights are on, the pH still reads 8.x when measured in the sump. Any thoughts?
 

disc1

-RT * ln(k)
It could be anything. pH probes are very prone to picking up electrical interference.
 

Drewcipher

Premium Member
Ok, so maybe just radiating stuff from the fixture and not in the tank. So I can trust my lights out reading.

I tested again and got 1.6 volts of voltage in the tank with the lights on.
 

Krazy

In Memoriam
Might wanna install a grouding probe if you dont aready have one, it might take care of the stray voltage... Also make sure your plugged into a GFCI outlet..
 
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