Solved: All fish dying and tank suddenly crashing

Eric23

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Long post but I think will help some people. The short of this is that I had stray voltage.

I recently moved to a new house and brought my reefer 450 with me. I paid some local people to help with the move and it went pretty smooth. I only lost 1 fish, a small leopard wrasse. About 3 weeks after the move I went on vacation for a week which I've done in the past with no tank issues so I wasn't to worried as I had everything set. When I came back all my fish looked really bad and the next day they were all dead all at once. I lost a purple tang, hippo tang that I had raised from a dime sized baby, a 7 year old percula, algae blenny, and a 2 year old swallow tail angel. At the same time a lot of my corals started to look like crap, I lost whatever frags of sps I had, some other stuff started to close up, my tank just didn't look good. Water testing didn't reveal much of anything, my parameters we're all good. The only thing I could think was that after we moved in we had a lot of work going on and maybe something got into the tank and poisoned everything so I started aggressively running carbon and doing more water changes. I was heartbroken to the point where I didn't even want to go into the room where the tank was and getting really frustrated that I couldn't get things looking better no matter what I did. Flash forward a month, my tank is fishless and all that's left are my inverts, anemones, softies, zoa's, and gorgonian. I put my hands in the tank and I feel a familiar tingle. I'm an electrician and I know what it feels like to be shocked. I go grab my meter, one end to ground, one in the tank, and holy crap I have 34 volts. One by one I start unplugging things and I watch the voltage go down. It turns out the sicce pump in my new eshopps skimmer, my new pair of maxspect gyres, and my varios return pump, are all giving off stray voltage. I've had tanks for years and never installed a ground probe. If I had I may have saved hundreds if not thousands in fish and coral. I went to my local shop, got a 10 dollar ground probe, put it in, and boom my meter reads 0 volts, intake it out 34 volts, put it back in 0 volts again. I'm really happy that I finally figured out the reason for what happened to but really frustrated with myself for not having a probe in the first place. So if you're having unexplained problems or long term live stock suddenly start showing signs of disease or stress that you can't figure out, I suggest going to you're local hardware store and buying a cheap multi meter to see if you have stray voltage. Better yet everyone should just have a ground probe on every tank.
 

Eagle_Steve

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Long post but I think will help some people. The short of this is that I had stray voltage.

I recently moved to a new house and brought my reefer 450 with me. I paid some local people to help with the move and it went pretty smooth. I only lost 1 fish, a small leopard wrasse. About 3 weeks after the move I went on vacation for a week which I've done in the past with no tank issues so I wasn't to worried as I had everything set. When I came back all my fish looked really bad and the next day they were all dead all at once. I lost a purple tang, hippo tang that I had raised from a dime sized baby, a 7 year old percula, algae blenny, and a 2 year old swallow tail angel. At the same time a lot of my corals started to look like crap, I lost whatever frags of sps I had, some other stuff started to close up, my tank just didn't look good. Water testing didn't reveal much of anything, my parameters we're all good. The only thing I could think was that after we moved in we had a lot of work going on and maybe something got into the tank and poisoned everything so I started aggressively running carbon and doing more water changes. I was heartbroken to the point where I didn't even want to go into the room where the tank was and getting really frustrated that I couldn't get things looking better no matter what I did. Flash forward a month, my tank is fishless and all that's left are my inverts, anemones, softies, zoa's, and gorgonian. I put my hands in the tank and I feel a familiar tingle. I'm an electrician and I know what it feels like to be shocked. I go grab my meter, one end to ground, one in the tank, and holy crap I have 34 volts. One by one I start unplugging things and I watch the voltage go down. It turns out the sicce pump in my new eshopps skimmer, my new pair of maxspect gyres, and my varios return pump, are all giving off stray voltage. I've had tanks for years and never installed a ground probe. If I had I may have saved hundreds if not thousands in fish and coral. I went to my local shop, got a 10 dollar ground probe, put it in, and boom my meter reads 0 volts, intake it out 34 volts, put it back in 0 volts again. I'm really happy that I finally figured out the reason for what happened to but really frustrated with myself for not having a probe in the first place. So if you're having unexplained problems or long term live stock suddenly start showing signs of disease or stress that you can't figure out, I suggest going to you're local hardware store and buying a cheap multi meter to see if you have stray voltage. Better yet everyone should just have a ground probe on every tank.
Thanks for this and sorry for your losses.

I have to agree, a ground probe is a must. One of the cheapest safety measures on can take.

And for the people that don’t have stray voltage, you will. Pumps, heaters, etc. are man made, they will fail and this will save a tank. Especially when paired with a gfci.
 

Ftrain576

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Thanks for the info. Could you kindly tell me how the probe s installed, and are there any special features to look for when purchasing the probe?
 

Eagle_Steve

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Thanks for the info. Could you kindly tell me how the probe s installed, and are there any special features to look for when purchasing the probe?
Titanium probe and it plugs into an outlet.

Here is an example.
3D0978A4-71CF-4716-9197-BDB8DEB5F7E2.jpeg
 

clm65

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So the probe would go in the sump, and handle any stray voltage in both the sump and DT, correct?
 
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Eric23

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Titanium probe and it plugs into an outlet.

Here is an example.
3D0978A4-71CF-4716-9197-BDB8DEB5F7E2.jpeg
I have the same probe. You just drop the titanium end in the water anywhere and plug in the other side to an outlet. That's it. I have mine in the sump. You don't have to do anything with the little ring attached to the plug side
 
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Eric23

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I've read a lot on here about stray voltage vs induced voltage and all that but I can't find anything else wrong with my tank. Could it be something else that killed my fish ? Absolutely. This is just one thing I can now rule out and in my opinion it's better to safe then sorry especially when you're talking about something as cheap as a ground probe
 

Mical

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Thanks for the reminder. It was a story as yours that made invest into one on every tank. Sorry for your losses.
 

WVNed

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I tested my tank today. I have 10 volts with current below what my meter will read.
I put the probe in the sump
Now the tank reads 0 volts
All the AC powered stuff like heaters is in the sump anyway.
 

Saltyreef

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Ive done a few searches and have found that people say anything below 40v is normal....I have about 34 volts in my tank and have for a while but now this gets me thinking about installing the ground probe after all. Thanks for your story and sharing your experience OP. Much appreciated.
 

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