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    Thread: Does a winter cover need to be transparent?

    1. #1
      Onit12345 is offline Junior Member
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      Does a winter cover need to be transparent?

      Can the koi stay it total darkness over the winter or does the cover need to be transparent to let some light in?

    2. #2
      MitchM is offline Member
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      You need to have some light so algae can process the CO2 that is produced by your fish and from organic decomposition.

    3. #3
      KoiRun's Avatar
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      To me it does not seem natural to be in total darkness. I always try to put myself in koi shoes. If I was a koi with no TV or internet at least give me a window to watch the sunrise and sunset

    4. #4
      koi4u2c is offline Senior Member
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      I have a hoop greenhouse over my largest pond covered with greenhouse plastic, slightly frosted but called clear. My frame is about 10 foot tall. I think the sun heats the water during the day, and keeps the greenhouse warm at night.
      Nancy



    5. #5
      KoimanNY is offline Member
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      i have a blue solar cover over my pond now> This is the 1st year i cover my pond. My led lighting goes on at 5pm to 11 at night

      Im hoping i won't have any problems

    6. #6
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      Definitely a clear cover. I use a clear pool cover that is like heavy duty bubble wrap.

    7. #7
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      Quote Originally Posted by MCAsan View Post
      Definitely a clear cover. I use a clear pool cover that is like heavy duty bubble wrap.
      Yep, I sure love my fancy bubble wrap so far!

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    8. #8
      Essex Koi is offline Member
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      Canít imagine leaving them in total darkness for a long period. My polycarbonate sheets allow 70% light transmission. 7am here and theyíve just been fed, pond water temperature is at 72f with ambient at 44f.

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      As it gets dark by 4.30 pm now, lights are on one corner of the pond on top of the covers ( in Summer they just sit on the corner of the wooden beams of the pond) and are lit until 9pm, which means I can feed them in the evening and be able to see them.

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      Last edited by Essex Koi; 11-10-2017 at 05:43 AM.
      4000 US Gallon Pond, 14 Koi.

    9. #9
      Pond,James_Pond's Avatar
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      Quote Originally Posted by audioenvy View Post
      Yep, I sure love my fancy bubble wrap so far!


      So is there a parking lot nearby with all the curb pieces gone?



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    10. #10
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      Quote Originally Posted by MCAsan View Post
      Definitely a clear cover. I use a clear pool cover that is like heavy duty bubble wrap.
      Do you cover your pond in Atlanta?
      -Rain

      :I CAN'T BRING THIS SHIP INTO TRTUGA ALL BY ME ONESIES, SAVVY?:

    11. #11
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      Quote Originally Posted by Pond,James_Pond View Post
      So is there a parking lot nearby with all the curb pieces gone?
      Ha! That's great. That curbing was done BEFORE I did the pond redo and I had to break it up to move it back against the pond walls. This spring I will mortar the pieces together so they don't look so hokey.

    12. #12
      Onit12345 is offline Junior Member
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      I think Iím gonna go with this roofing material
      Attached Images Attached Images  

    13. #13
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      I have been pond-ering this issue forever!! My problem is the size of the pond. It would seem to be a gigantic task to cover mine for the winter. Any ideas are always welcome though.

      Doug - out
      See Our Pond http://www.koiphen.com/forums/showth...ond&highlight=

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    14. #14
      Onit12345 is offline Junior Member
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      Quote Originally Posted by trumpetdoug View Post
      I have been pond-ering this issue forever!! My problem is the size of the pond. It would seem to be a gigantic task to cover mine for the winter. Any ideas are always welcome though.

      Doug - out
      What are the dimensions of your pond? They make some large solar pool covers

    15. #15
      Essex Koi is offline Member
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      Quote Originally Posted by Onit12345 View Post
      I think I’m gonna go with this roofing material

      That looks like single layer, which won’t insulate very well. Best is triple layer or above.
      4000 US Gallon Pond, 14 Koi.

    16. #16
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      Quote Originally Posted by trumpetdoug View Post
      I have been pond-ering this issue forever!! My problem is the size of the pond. It would seem to be a gigantic task to cover mine for the winter. Any ideas are always welcome though.

      Doug - out
      And... why would you want to cover Lake Michigan?
      Time you enjoy wasting is not wasted time. ---- Marthe Troly-Curtin



    17. #17
      MCAsan's Avatar
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      Quote Originally Posted by rainblood View Post
      Do you cover your pond in Atlanta?
      Sure do. Cover goes on usually New Year's Day and comes off mid to late March depending on the weather.

    18. #18
      sk8r is offline Member
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      I use a floating 6' ring of shade cloth stitched to irrigation hose and a hose barb to shade the deep end to prevent predators seeing the fish, and to prevent disturbance of their rest, take care to assure a hole in the ice; but the other half of the pond is unsheltered. It will all ice over between, usually, November to March. I have added a heated recirculation de-gasser unit right over their sleeping area, but I am also maintaining a floating heater.

    19. #19
      nmtsaki's Avatar
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      For larger ponds, I have heard of ponders floating sheets of bubble wrapping on the surface of the pond, lifted off of the surface by beach balls or the like. I've also heard of styrofoam sheets. I guess it really depends on how big the surface area you need to cover. If it is similar to a lake in depth, the need really isn't there, because the deepens into the earth provides the insulation. The koi would stay at the bottom in the relatively "warm" layers, with the surface open to the air, or at least a few air holes for the gases to escape. Maybe a separate thread Doug, with your set up, and pics.


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    20. #20
      nmtsaki's Avatar
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      As for the OP, clear/transparent, is best, or at least have the timers with lights going on and off in the morning and night. I wouldn't leave them in complete darkness. A solar pool cover (bubble wrap) is actually great, because it directs the suns rays and traps the heat underneath it. I have a setup where I can walk in and visit with my fish all year round. My cover FINALLY went up yesterday, after the temps fell unexpectedly from 60 to 30 pretty much overnight. I'm lucky the frame was up and I had dropped the bucket heaters, I just had to plug them in so the fish would at least be able to huddle nearby. And huddle they did! fish are not stupid, they will find the warmest water and stay there.

      My set up is an aluminum frame designed from a carport utility. It's covered by a solar pool cover that's been through 5 harsh Michigan winters. Blowing winds, heavy snowfall, rats. . I keep repairing it, and it still keeps in the heat. May have to invest in a ne one soon though, the rats are worse than the winters.

      Think about how you would feel without any light for 3 months out of the year, that shoul help your decision. And if you were thinking tarp material as a cover, it's not very insulating.

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      "Our goal is to assist with emergency and Koi health issues, as well as educate on best practices. Please help us gain a clear picture by giving the original poster time to answer our questions before offering opinions and suggested treatments."






      Favorite Quotes:
      The greatest pleasure of a dog is that you may make a fool of yourself with him, and not only will he not scold you, but he will make a fool of himself, too. -- Samuel Butler.

      My little dog - a heartbeat at my feet. -- Edith Wharton.

      I think dogs are the most amazing creatures; they give unconditional love. For me they are the role model for being alive. -- Gilda Radner

      Yesterday I was a dog. Today I'm a dog. Tomorrow I'll probably still be a dog. Sigh! There's so little hope for advancement. -- Snoopy

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