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Thread: Power outage

  1. #1

    Power outage

    I have a 4500 gallon pond with about 30 fish. I have just found out that there will be a power outage tomorrow from 9am to 4pm.. Question: will the fish survive 7 hours of no filtration and no air?

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    Senior Member Rank = Nanasai dbs's Avatar
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    Hmmmmm, I have often wondered if it is feasible to run a commando socket into the power supply box, so that on those occasions a generator could be hooked up to supply the power, short term...

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  5. #3
    Senior Member Rank = Hassai Koiz's Avatar
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    Power outages are one of the reasons I've held off heating my pond. We get a lot of power cuts round here, often from tree branches touching power lines, and that can take a while to fix if it's on private land as the engineers have to obtain approval for access. Crazy situation isn't it, but it's happened a number of times!

    Anyway, knowing how stressful a sudden drop in temp can be, it's one of the things that's always worried me the most as at least with a filter out you can do water changes if necessary. But a heater suddenly stopping is more difficult to compensate for, esp in a quarantine setup where you may be heat ramping. I've often wondered what backups folk have in place for such things.

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  7. #4
    Extreme Koi Member Rank = Yonsai LouiseR's Avatar
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    Quote Originally Posted by ndwgolf View Post
    I have a 4500 gallon pond with about 30 fish. I have just found out that there will be a power outage tomorrow from 9am to 4pm. Question: will the fish survive 7 hours of no filtration and no air?
    As I understand it from your previous threads your pond is relatively new, your filters are still cycling and your pond temperature averages 28c. A 7hr power outage won’t help your filters - you should expect ammonia and nitrite to rise/spike during and following the outage - but this should be manageable. Less manageable will be ensuring that the water remains sufficiently oxygenated for 30 fish (minimum 6mg/l). The best solution would be, as abs said, to hook up a generator to keep filtration and aeration running during the outage. If you can’t do that then:

    # Stop feeding during and following the outage, don’t restart until ammonia and nitrite are at acceptable levels.

    # Test for ammonia, nitrite and oxygen frequently during the outage, and regularly afterwards.

    # If ammonia starts to climb during the outage add an ammonia binder if you have one to hand. If nitrite spikes during or following the outage have pond salt to hand and, if necessary, add to protect the fish in accordance with Manky Sanke’s Salt Dosage Table which you’ll find at #post 7 on this thread - https://www.koiforum.uk/koi-carp-cha...ht=Salt+dosage

    # Carry out small water changes every hour during the outage and jet spray water back in creating as much surface and below surface agitation as you can. Don’t forget to use a dechlorinator if your source water contains chlorine or chloramine. You may need to increase the water changes/jet spray routine - to constant jet spray - if doing so hourly doesn’t ensure that O2 remains above 6mg/l (or, if you don’t have an O2 test, you see the fish struggling to breathe i.e. laboured gill movement and/or gasping at the surface).

    # Do a decent water change following the outage i.e. 20%.

    # I can’t tell from your photo whether you have any airstones running in your pond - if you don’t, it would be a good idea to add an air pump and air stones to assist with O2 levels.

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  9. #5
    Guys I will buy a generator this morning and run the biofilter and air pumps..........when we have a power outage we have no water as it is supplied via a pump.........I should be able to get a generator for around 3 to 500 quid
    Neil


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  11. #6
    Quote Originally Posted by ndwgolf View Post
    Guys I will buy a generator this morning and run the biofilter and air pumps..........when we have a power outage we have no water as it is supplied via a pump.........I should be able to get a generator for around 3 to 500 quid
    Neil


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    My plan is to try and run the RDF water jets and the same 4 air stones that are currently in the pond. I will leave the air running in the bio filter but there won't be any water getting circulated through it throughout the power outage...I will post a video of it when it's up and running.
    Neil

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  13. #7
    Quote Originally Posted by ndwgolf View Post
    My plan is to try and run the RDF water jets and the same 4 air stones that are currently in the pond. I will leave the air running in the bio filter but there won't be any water getting circulated through it throughout the power outage...I will post a video of it when it's up and running.
    Neil

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    Here you go https://youtu.be/kJ6gKWB3rCY


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  15. #8
    Senior Member Rank = Supreme Champion freddyboy's Avatar
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    When I nuked my pond this summer. With pp. And cleaned and emptied the pond
    Tempreture was 24c. The fish went into a vat. With plenty of air. No filteration.
    For about 30 to 40 hours. 50 odd fish. No feed.
    Not ideal. But they was ok. Maybe luck.
    But no fish loss. And no flashing or jumping.
    Good luck with it mate .
    Fred

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  17. #9
    Got 12 cubic metres of oxygen after the test so I think we are good......fish look hungry but apart from that they seem okay

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  19. #10
    Quote Originally Posted by freddyboy View Post
    When I nuked my pond this summer. With pp. And cleaned and emptied the pond
    Tempreture was 24c. The fish went into a vat. With plenty of air. No filteration.
    For about 30 to 40 hours. 50 odd fish. No feed.
    Not ideal. But they was ok. Maybe luck.
    But no fish loss. And no flashing or jumping.
    Good luck with it mate .
    Fred

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    Cheers buddy. Up to now all is good.
    I've been sat beside the pond for the last 3 hours (too frigging hot in the house) hopefully the power will be back on around 4pm

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  21. #11
    Senior Member Rank = Supreme Champion freddyboy's Avatar
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    Quote Originally Posted by ndwgolf View Post
    Cheers buddy. Up to now all is good.
    I've been sat beside the pond for the last 3 hours (too frigging hot in the house) hopefully the power will be back on around 4pm

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    Good luck with it lol. Fingers crossed for you. On the electric s.
    Nice one on getting the genny. So quickly.
    As in your tempreture s. The air is very important for the fish
    Enjoy the sunshine.
    Fred


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  23. #12
    Everything back to normal. On the mains now.
    Water test results below;

    PH 8.3 (meter) Total 7
    KH 7
    Ammonia 0.25
    Nitrites 0

    I will starve the bastards tonight and switch the auto feeder back on tomorrow morning.

    Neil




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