stray voltage

Dec 08, 2013

Tommy Collins wrote

I have a bh90 skimmer purchased about 3 months ago local to me, I have 30v from water in display tank to ground when the skimmer is running, .56v when it isnt running...I was reading about stray voltage keeping corals from opening completely and a few weeks ago with no chemistry change a few colonies of zoas started closing. So this lead me to checking..Am I correct to think it shouldnt be there? Can the pump be replaced? I called the local fish store and they said since it was past 1 month im out of warranty..I thought id email you for my options..It has the OTP pump on it.
thanks, thomas

5 Answers

Dec 09, 2013

Carlos agent wrote

Tommy,

Have you removed the pump from the skimmer, placed it on a bucket of water and ran it and then tested for voltage? Did they remove the impeller and made sure the magnet impeller is not seized to the shaft. The only way to really test for stray voltage is to isolate the pump (bucket of water) and test it there.

Here is a good article on how to check from stray voltage and how to figure out what part is causing the issue...

http://www.coralvue.com/support/790806-Stray-Voltage-

Kind regards,

Carlos Chacon
CoralVue

Dec 09, 2013

Tommy Collins wrote

Tonight I removed the pump from the skimmer and ran it in a bucket of water and read 23 volts from water to ground

Dec 10, 2013

Carlos agent wrote

Tommy,

Did you also make sure that the magnet impeller is not seized to the shaft? I am asking because that has been known to cause the issue at which point the impeller has gone bad but not the whole pump.

Let me know,

Carlos Chacon
CoralVue

Dec 10, 2013

Tommy Collins wrote

yes I took the impeller completely apart and cleaned.

Dec 11, 2013

Carlos agent wrote

Tommy,

Please submit a new ticket with all the pump's information and your shipping address so we can send out a new pump.

Don't do it here because this is a public forum.

Regards,

Carlos Chacon
CoralVue