Voltage Level (0.7 V) Causing HLLE?

[ScubaPrawn]

From what I've read, every system has a little bit of stray voltage with almost every piece of equipment contributing slightly.

I have a fish beginning to develop HLLE -- I've tried a new diet, a different activated carbon brand, but nothing has worked. I checked for stray voltage and got 0.7 V on the volt meter. Does anyone have know enough to say whether this level is acceptable? I can get it down to 0.3V if I unplug my heater, but replacing it with a new heater will probably only send it up to 0.5 V or so.

 

[redawg]

I really don't think that less then 1v is going to bother anything.

 

[Jeff000]

Stray voltage is when there is a voltage between two objects that shouldn't have a voltage between them.
But in a salt water tank with moving water you just get induced voltage. And odds are that voltage is induced from your lights even. How are you measuring this voltage?

 

[ScubaPrawn]

I'm using a volt meter. Black probe grounded in an outlet, red probe in the water. I unplug my equipment one by one to see how it effects the reading.

If this isn't the cause of the HLLE I'm really at a loss.

 

[Jeff000]

You need a meter with low impedance inputs, RMS would be nice too.
Use one of these too, its a stray voltage eliminator so you can get actual results.
http://www.transcat.com/Catalog/productdetail.aspx?itemnum=SV225&utm_source=google&utm_medium=base

Stray voltage is a misleading term.