Josh's tank

Discussion in 'Medium Tanks' started by Jscholtz014, 14 Jul 2017.

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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    What do you mean by an earth plug point?
    What setting must the multimeter be on?
     
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  3. RiaanP

    RiaanP Moderator

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    dc volt
    3 pronged plug, the big one is the earth. Connect wire to that. DO NOT CONNECT ANY WIRES TO THE BROWN OR BLUE, NEUTRAL AND LIVE.
    Multimeter connected to that wire.

    The same plug and wire will became your DIY earth point.
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    Ok thank.. and the plug musnt be on? Just a extension cords plug?
     
  5. RiaanP

    RiaanP Moderator

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    Does not matter, the earth wire does not go through a switch.

    As long as the extension cord is grounded.

    Here is the complete earth probe. For testing, remove the welding rod. Put the multimeter at the top of the connection block. Other probe of multimeter in the water.
    [​IMG]

    and it would so a reading
    [​IMG]
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    Oh ok. Thanks.. will try it now
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    Hi @RiaanP
    So the voltage was 8.47 about.. would this be enough to shock me?
    I turned the wavemaker off and it went down to 2 volts.. turned off the return pump and it went to 0.8
    Am i doing this correctly?

    20171002_110459.jpg

    20171002_110453.jpg

    20171002_110451.jpg
     
  8. RiaanP

    RiaanP Moderator

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    Yeah. Sounds about right.

    Its like putting those small 9V batteries on your tongue. Although only 9V, it bites your wet tongue.
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    Oops.. sorry.. the wire wasnt completly on the earth wire.. went up to 40 volts.. wavemaker off went to 8 volts return pump off 4.8.. will this still harm my fish? Lights off 2.4 volts.. still harmful?
     
    Last edited: 2 Oct 2017
  10. TaahirS

    TaahirS MASA Contributor

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    Never mind your fish. You will end up getting shocked. Replace the wavemaker at least.
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    The wavemaker is out. Will 8 volts harm my fish ect. I just want to know
     
  12. RiaanP

    RiaanP Moderator

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    Tank is isolated. Will not harm fish in short term.

    Long term and higher voltage could lead to electrolysis around the point of leakage. That could change the chemical composition of the saltwater in contact. 8V is a bit, but not enough to be of real concern, OK depending on the tank size. A bit of chemical changes on a 1000+ system is a lot different from the same little bit of chemical changes on a 80L tank.
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    Tank is 210 litres
     
  14. RiaanP

    RiaanP Moderator

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    And yeah, 40V is not OK. Give it a few more days or wiggle some wires around as when you clean your wavemakers and that small crack leaking electricity will open up wider. Resulting in either you being shaken and wide awake when you feed the fish in the morning. Or if you got an earth probe permanently on the tank, a tripped house at 2:30 in the morning.

    Been there, done that. OK, the second scenario. And its not fun being half asleep trying to figure out what is tripping the house power. But you cannot pull out the earth probe as that is what is keeping you alive.

    Actually the first scenario as well, when I started out and knew nothing about earth probes. And 132V is not something to play around with barefoot.
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    :thumbup: thanks for your help.. with everything off the voltage was 2 volts.. so ill aim for that..
     
  16. RiaanP

    RiaanP Moderator

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    2V is fine.
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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  18. viper357

    viper357 Admin MASA Contributor

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  19. OP
    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    So after the long awaited cycle. I added my first little critter. A turbo snail:swim:
     
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  20. tekkengal

    tekkengal Moderator

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    You need to post a pic of it for prosperity :)
     
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    Jscholtz014

    Jscholtz014 210 LITRE AQUARIUM

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    Will do this afternoon:thumbup1:
     
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