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  #1  
Old 12-29-2012, 10:50 PM
Reef_Geek Reef_Geek is offline
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I've been shocked a few times. Work long enough with aquariums, it's a matter of time before you realize why all the fuss about being careful around water and electricity.

Culprits have been...
1) most commonly, broken heater tubes
2) seals eventually broken on submersible pumps
3) salt creep or a bit of salt water bridging electrical contact points, such as on light bulbs or along your cords to the plug, to the rest of the system

Lessons learned
1) don't forget to unplug your heaters when draining
2) make sure you install a drip loop. if you don't know what this is... look it up
3) keep salt creep away from electrical contact points, ie don't rest your light on the tank and clean up the splashing
4) ideally, ground your system.

In your mystery of selective shocking... I've found that a weak current can be felt more readily where the skin is thinner... such as where I've chewed my finger nail cuticles or through a cut. (yup). Also, electricity will flow through your body, so if you're bare foot vs not, makes difference... as well as touching another contact point as gregzz4 pointed out... something else metal.

Last edited by Reef_Geek; 12-29-2012 at 10:52 PM.
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  #2  
Old 12-29-2012, 10:55 PM
mtlreeffreak mtlreeffreak is offline
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Quote:
Originally Posted by Reef_Geek View Post
I've been shocked a few times. Work long enough with aquariums, it's a matter of time before you realize why all the fuss about being careful around water and electricity.

Culprits have been...
1) most commonly, broken heater tubes
2) seals eventually broken on submersible pumps
3) salt creep or a bit of salt water bridging electrical contact points, such as on light bulbs or along your cords to the plug, to the rest of the system

Lessons learned
1) don't forget to unplug your heaters when draining
2) make sure you install a drip loop. if you don't know what this is... look it up
3) keep salt creep away from electrical contact points, ie don't rest your light on the tank and clean up the splashing
4) ideally, ground your system.

In your mystery of selective shocking... I've found that a weak current can be felt more readily where the skin is thinner... such as where I've chewed my finger nail cuticles or through a cut. (yup). Also, electricity will flow through your body, so if you're bare foot vs not, makes difference... as well as touching another contact point as gregzz4 pointed out... something else metal.


hmmm my Sump does have alot of salt build up around the edges now that you mention it..
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  #3  
Old 12-29-2012, 10:58 PM
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gregzz4 gregzz4 is offline
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Getting shocked only sometimes could mean the faulty hardware is something that only runs sometimes, such as a heater


Something else I wanted to touch on, but after the multimeter stuff ...

You have a ground probe and are getting shocked.
Does this mean you don't have a GFCI ?

Using a probe without one is much more dangerous than not using a probe at all. You are allowing the water to become fully energized (completed circuit) from a voltage leak but doing nothing to protect yourself

If you are using a GFCI, test it
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Old 12-29-2012, 11:00 PM
mtlreeffreak mtlreeffreak is offline
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Quote:
Originally Posted by gregzz4 View Post
Getting shocked only sometimes could mean the faulty hardware is something that only runs sometimes, such as a heater


Something else I wanted to touch on, but after the multimeter stuff ...

You have a ground probe and are getting shocked.
Does this mean you don't have a GFCI ?

Using a probe without one is much more dangerous than not using a probe at all. You are allowing the water to become fully energized (completed circuit) from a voltage leak but doing nothing to protect yourself

If you are using a GFCI, test it

no GFCI here..
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  #5  
Old 12-29-2012, 11:07 PM
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Quote:
Originally Posted by mtlreeffreak View Post
no GFCI here..

Umm, that's a pretty dangerous situation
Let's just say it's a good thing you only got shocked
For the sake of your critters, I'd suggest you unplug the ground probe for now and DON'T TOUCH the water
This will cut down on the amount of current in the tank and give them a break
DO NOT touch the water without the probe in place as you will become the ground

Maybe spend tonight reading up on aquariums with GFCIs and ground probes

1 - Plug the probe back in when you have the meter ready to go
2 - Find the hardware issue and fix it
3 - Install a GFCI, or a bunch of individual ones for each 'wet' hardware piece
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Old 12-30-2012, 07:25 PM
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Quote:
Originally Posted by Reef_Geek View Post
Lessons learned
1) don't forget to unplug your heaters when draining
2) make sure you install a drip loop. if you don't know what this is... look it up
3) keep salt creep away from electrical contact points, ie don't rest your light on the tank and clean up the splashing
4) ideally, ground your system.
1) Learned the hard way
2) Lit my house on fire
3)Lit my house on fire
4)Did this before lighting house on fire

Also, electrical cords eventually get brittle and crack in salt water. Learned the hard way.
DIY wiring, make sure you know what you're doing - Lit house on fire (yes, I'm also surprised I still have a house -lol)
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Old 12-30-2012, 07:38 PM
iceman86 iceman86 is offline
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Quote:
Originally Posted by Aquattro View Post
1) Learned the hard way
2) Lit my house on fire
3)Lit my house on fire
4)Did this before lighting house on fire

Also, electrical cords eventually get brittle and crack in salt water. Learned the hard way.
DIY wiring, make sure you know what you're doing - Lit house on fire (yes, I'm also surprised I still have a house -lol)
What I'm surprised is your still alive and your wife hasn't killed you!! My wife would have killed me if I set the house on fire because of the aquarium lol
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Old 12-30-2012, 07:42 PM
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Aquattro Aquattro is offline
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What I'm surprised is your still alive and your wife hasn't killed you!! My wife would have killed me if I set the house on fire because of the aquarium lol
Good point. Last time I came home, smoke billowing from house, wife, daughter and a nurse standing on the road. Thought I was done for sure!
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Old 12-30-2012, 10:13 PM
iceman86 iceman86 is offline
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Good point. Last time I came home, smoke billowing from house, wife, daughter and a nurse standing on the road. Thought I was done for sure!
Lmao (clapping hands)
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  #10  
Old 01-03-2013, 06:51 AM
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Any updates ?
Are you still alive
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