Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > Marine Fish Forums > Fish Disease Treatment
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 02/18/2018, 08:32 PM   #1
DiverDave32
Registered Member
 
Join Date: May 2015
Posts: 30
Yellow Tang and stray voltage

I purchased a yellow tang a few months back and he was doing great in quarantine. Performed TTM, waited another three weeks and into the DT he went. Before introduction, I noticed that my Tibicen's face was a little pale. My Tibecen started attacking the tang upon introduction to the tank but that stopped after a day or so. The Tangs fins were however getting torn and I thought the Tibecen was attacking the tang when I wasn't watching. After research, it appered to be more likely HLLE.

Two days ago, I was working on my sump and got a nice jolt. I thought it was perhaps the new ATK that I put but wasn't sure so decided to test for stray voltage. When I tested, I found that there was 80 volts in the tank! I tested the different equipment and found that one of the powerheads which I have discarded was the cause as upon removal the voltage dropped to 8 volts.

I will see how the tang and other tank mates respond but in your opinion, do you think the stray voltage could be the cause for the tangs condition and the Tibicen's? Would it affect any other livestock, inverts, corals?

Thanks for the feedback.

Dave


DiverDave32 is offline   Reply With Quote
Old 02/19/2018, 01:04 PM   #2
Dmorty217
Saltwater Addict
 
Dmorty217's Avatar
 
Join Date: Jan 2012
Location: Vandalia OHIO
Posts: 11,215
Stray voltage will definitely cause HLLE


__________________
Fish are not disposable commodities, but a worthwhile investment that can be maintained and enjoyed for many years, providing one is willing to take the time to understand their requirements and needs

Current Tank Info: 625g, 200g sump, RD3 230w, Vectra L1 on a closed loop, 3 MP60s, MP40. Several QTs
Dmorty217 is offline   Reply With Quote
Old 02/19/2018, 07:29 PM   #3
DiverDave32
Registered Member
 
Join Date: May 2015
Posts: 30
Thanks for the response. Hope he recovers quickly!

Will add checking for stray voltage to my routine.


DiverDave32 is offline   Reply With Quote
Old 02/20/2018, 09:06 AM   #4
nereefpat
Registered Member
 
nereefpat's Avatar
 
Join Date: Apr 2016
Location: Central Nebraska
Posts: 2,685
Submerged equipment should be plugged into a GFCI receptacle.


__________________
Pat

Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers
nereefpat is offline   Reply With Quote
Old 02/20/2018, 02:14 PM   #5
Tripod1404
Registered Member
 
Join Date: Mar 2016
Posts: 1,685
I seriously doubt stray voltage can cause issues in our tanks. That is not how electricity works.

Voltage just shows the electrical potential difference between two points, as long as there is not a "circuit" for it to flow, it cant do anything. There are pictures of people standing over tesla-coils and electrical bolts and hairs (first picture). But they wont get shocked as long as the electricity dont has somewhere to discharge to. Same way in a aquarium, ff you complete the circuit with something (like your arm), it will allow the potential difference to discharge as electrical current.

But something inside the water cannot complete the circuit. And even if it finds a way to discharge, electricity will flow through the path that has the least resistance, so it wont flow through the fish. Like the case for a faraday cage, electricity will flow through the metal, since metal has far less resistance) and leave who ever is inside the cage unharmed (second picture).

IMO the correlation between stay current and poor fish health is due to metal leaching into the water trough the circuit that makes contact with water, not the voltage itself.






Tripod1404 is offline   Reply With Quote
Old 02/20/2018, 02:59 PM   #6
lagatbezan
Registered Member
 
lagatbezan's Avatar
 
Join Date: Nov 2004
Location: Long Island, NY
Posts: 1,044
Quote:
Originally Posted by nereefpat View Post
Submerged equipment should be plugged into a GFCI receptacle.
This ^
Everything that has to do for your tank MUST be plugged into a GFCI outlet.
A lot of people also recommend the use of a grounding probe.


__________________
Ryan.
300g with velocity t4 for return and a Reflo dart on a closed loop, T5 lights & SRO3000 skimmer.

Current Tank Info: 300g
lagatbezan is offline   Reply With Quote
Old 02/20/2018, 06:48 PM   #7
DiverDave32
Registered Member
 
Join Date: May 2015
Posts: 30
My equipment is connected to GFCI receptacles.

I do wonder what impact the electricity can do. I have seen sharks swarm around a diver who panicked and had his heart race which generates very small levels of current so wonder what impact the 80 volts could have on fish. In any case, the pump is removed. I hope that with my daily water changes, any leaked metals will eventually be removed from the system.

The real test will be whether or not the tang recovers quickly. I am keeping my fingers crossed.

Thanks for the feedback.


DiverDave32 is offline   Reply With Quote
Old 02/21/2018, 09:23 AM   #8
dangros
Registered Member
 
dangros's Avatar
 
Join Date: Oct 2004
Location: Reston, VA
Posts: 171
Is there a reason there's still 8V in the tank?


dangros is offline   Reply With Quote
Old 02/21/2018, 01:19 PM   #9
Rover88
Registered Member
 
Join Date: Sep 2017
Location: New Brunswick, Canada
Posts: 433
Quote:
Originally Posted by dangros View Post
Is there a reason there's still 8V in the tank?
Stray/ambient voltage. Not uncommon or worrisome at that level.


Rover88 is online now   Reply With Quote
Old 02/21/2018, 08:08 PM   #10
DiverDave32
Registered Member
 
Join Date: May 2015
Posts: 30
I have also heard that it is quite normal. I will try to check individual components when I get a chance to see if one particular piece of equipment is causing it.


DiverDave32 is offline   Reply With Quote
Old 03/11/2018, 09:26 PM   #11
DiverDave32
Registered Member
 
Join Date: May 2015
Posts: 30
Just a quick update but the Tang appears to be recovering nicely. Fins are growing back and white area around head receding. Not sure it was the voltage but it is also more pleasent for me to not get shocked when I put my hands in the sump.


DiverDave32 is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -6. The time now is 11:58 AM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.