Stray voltage - help!

[Fishingandreefing]

So it’s 19v stray voltage I need to be concern? I recently lost some corals and didn’t know what caused it so I checked.

even though I shut off everything, it still reading 10v

I turned them off one by one and found the following:

2 jebao wavemakers 4v
Octo skimmer 5v
Return pump 1v

so what’s next?

 

[blaxsun]

Was there anything not leaking stray voltage?

 

[NanoSteam]

You don't have a heater? usually the culprit

 

[n2585722]

Did you unplug everthing near the tank including lighting and any controllers or monitors?

 

[Fishingandreefing]

You don't have a heater? usually the culprit

Heater is about 4-5v

 

[Fishingandreefing]

Did you unplug everthing near the tank including lighting and any controllers or monitors?

So I guess even though they’re not touching water still affecting the range? My 120g which sits about 3 feet away has a low reading of 7v

 

[Fishingandreefing]

What I am curious is what would be the acceptable range

 

[Fishingandreefing]

Was there anything not leaking stray voltage?

Not really seams like the return is the lowest, 1v

 

[NanoSteam]

What I am curious is what would be the acceptable range

I was just doing research on this and i'm seeing anything over 40 to 50v is cause for concern but I'd rather have next to none.

 

[mdb_talon]

Sounds more like induced rather than stray voltage somewhere. Very normal at those levels though i would really doubt it is cause of any issues.

 

[Fishingandreefing]

I agree rather have none as well but it seems like everything you put in there add a few voltages. Make sure you guys check yours too

I hope my level is acceptable lol

 

[Fishingandreefing]

Anyone else? I am not too worry if my tank is doing good but is not.

I checked all my other tanks and they’re floating at around 15-17v

 

[nereefpat]

Using a GFCI?

 

[Fishingandreefing]

Using a GFCI?

No

 

[alton]

If you want 0 volts in your tank use a grounding probe for induced voltage created by submersed pumps and open lamps to your aquarium. Before plugging in the probe make sure your receptacle is truly grounded. I have seen grounding type receptacles not have a grounding conductor attached, so the home owner thought they were protected, when they were not. It is a good idea to plug all 120v equipment into a GFCI receptacle.

 

[jmichaelh7]

Use a grounding probe.

I got hit one time by a broken UV lamp. Then hit again by a cheap powerhead in the sump. still haven’t installed the probe and I need to now that I’m reading this

 

[nereefpat]

You can use a ground probe, but you HAVE TO use a GFCI if using a ground probe.

If you use a GFCI, it will trip if there is actual AC voltage leaking from a device.

 

[n2585722]

I will have to check mine when I get home. Where are you checking it In the sump? Also if you do use a ground probe make sure you have everything on a GFCI circuit. I have everything split between two different GFCI circuit outlets.

 

[Fishingandreefing]

If you want 0 volts in your tank use a grounding probe for induced voltage created by submersed pumps and open lamps to your aquarium. Before plugging in the probe make sure your receptacle is truly grounded. I have seen grounding type receptacles not have a grounding conductor attached, so the home owner thought they were protected, when they were not. It is a good idea to plug all 120v equipment into a GFCI receptacle.

I do have a ground probe plugged into the outlet. The test was done without it

 

[Fishingandreefing]

I will have to check mine when I get home. Where are you checking it In the sump? Also if you do use a ground probe make sure you have everything on a GFCI circuit. I have everything split between two different GFCI circuit outlets.

I don’t but it’s on my list to get them