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Thread: Flashing?

  1. #1
    Junior Member Rank = Fry newboy's Avatar
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    Flashing?

    Hi everyone. I'am new to Keeping Koi. Heard alot about fish flashing what is this? What does it mean?
    Also Have this black alge on floor and walls of my pond How do i get rid of it safely.

    Cheers for any help



  2. #2
    Senior Member Rank = Hassai Alburglar's Avatar
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    It's when the koi start flicking themselves against hard objects in the pond. It usually means they have parasites or that something is wrong with the water parameters. Too much ammonia for example or chlorine in the tap water.
    Kikusui, Beni Kikokuryu, Hariwake, Sanke, Yotsujiro, Doitsu Aka Bekko, Purachina & Mukashi Ogon.

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  4. #3
    Flashing is where a fish rubs itself against something (wall, bottom drain, etc) as a reaction to something irritating it, eg parasite or a water quality issue. It's a fast purposeful motion, and can often involve the fish twisting as it passes whatever it's trying to rub against, I guess giving a glimpse or flash of the fish to the watching koi keeper, maybe where the phrase comes from...

    The algae I'm sure is nothing to worry about, it will almost certainly be playing a beneficial role in your pond's ecosystem. People tend to remove hair or blanket weed as it's unsightly and can clog filters when it breaks away from the sides (or nibbled by the inhabitants).

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  6. #4
    Junior Member Rank = Fry newboy's Avatar
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    Hi thanks for the info. will do a test of the water and see what comes up. I have cover over my pond. Just never had this black alge before in my pond. Just would like to know if harmful to the fish.
    thanks again

  7. #5
    Hi
    ihave anew pond, the 15-23 cm fish have been in about 4 weeks. I notice a little flashing, with some fish after feeding. Is this normal or a problem.

    I have the gear for doing a scrap and test, but the fish are hard to catch?

  8. #6
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    How old is the pond . You are probably running in to NPS

    Get all the info you can please ie
    pond size, age , liner ,fiber glass
    Filter you have
    All water test kh ph ammonia temperature the works please and best to put the results up not just day they fine

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    "we are water keepers first"

    Johnathan

  9. Thanks Lindosbay Thanked / Liked this Post
  10. #7
    Thanks for reply

    info
    Nexus 220., gravity feed bottom drain, Pond 2500 gals fibreglass, evaqua 90 air pump, lead to nexus and one air stone, water dues have current.
    water been in 10 weeks, fish in 4 weeks

    temp 15.9 Readings 8/5/22

    nh3 0.1
    no2 0
    ph 8
    po43- (phosphate) 2



    Will be testing today, after cleaning filter.

  11. #8
    Quote Originally Posted by Lindosbay View Post
    Thanks for reply

    info
    Nexus 220., gravity feed bottom drain, Pond 2500 gals fibreglass, evaqua 90 air pump, lead to nexus and one air stone, water dues have current.
    water been in 10 weeks, fish in 4 weeks

    temp 15.9 Readings 8/5/22

    nh3 0.1
    no2 0
    ph 8
    po43- (phosphate) 2



    Will be testing today, after cleaning filter.
    but

    unfortunately I cannot catch the little so and so,s! Need a bigger net!

  12. #9
    Job done, at last,.
    tests show mainly tric with single skin fluke.

    seeing my fish doc on Wednesday for the treatment

 

 

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