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  • Page 2 of 2 FirstFirst 12
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    Thread: What's the Minimum Temp for Koi?

    1. #21
      Russell Peters's Avatar
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      Quote Originally Posted by CHICHI View Post
      This corresponds to the lowest setting on my Thermostat or I would maintain 20C
      That's the lowest temperature on my heater as well.
      people like to vehemently defend their purchases and find it incredulous that anything could be better

    2. #22
      vipldy's Avatar
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      Carl,if you wanna grow them 70's would be good!
      Marie

      Have You Hugged Your Koi Today Ruby's Keeper


    3. #23
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      Quote Originally Posted by six6guy View Post
      Solar. Run pond water through long black pipes exposed to sunlight. You can cover one side of a barn roof with a grid of black pipe and get good results. Not sure you can get to 50, but a 10 or 15 degree increase in normal temp is likely.

      Brad
      Wouldn't you want to bypass that at night, though? If not, wouldn't it act to cool the water at night?
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    4. #24
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      Quote Originally Posted by cppond View Post
      Wouldn't you want to bypass that at night, though? If not, wouldn't it act to cool the water at night?
      In General

    5. #25
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      Quote Originally Posted by cppond View Post
      Wouldn't you want to bypass that at night, though? If not, wouldn't it act to cool the water at night?
      Yes. My brother has this setup, he is in the central Washington hills (Wenatchee area). We just setup a 100vac timer to control the pump, he adjusts the timer to match sunlight hours. It works pretty good.

      Brad










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    6. #26
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      Quote Originally Posted by cppond View Post
      I don't want then to grow until they are outside in the spring.
      No reason to let it get below 50 except for the cost.

    7. #27
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      I would say 50-55 then but more like 55
      Marie

      Have You Hugged Your Koi Today Ruby's Keeper


    8. #28
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      Quote Originally Posted by Russell Peters View Post
      That's the lowest temperature on my heater as well.
      I have the heater units from a king sized water bed under my intex QT. So I only have low, medium, and high (and every possible position in between). So low is as low as I go.

      Brad










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    9. #29
      madeyna is offline Senior Member
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      Just though I would mention that my koi thawed out and are swimming around in the ice. I am thinking about putting them in the big pond since temp. swings would be less in the 5000 gallon in the ground. They just froze over in the stock tank and that cann,t be good. I am not sure the stock heater would maintain 50 and above though.
      YADA X 16 proud member of the blabbermouth club Have faith and hope in your self and each other and the world will be yours TINA


    10. #30
      Cowiche Ponder's Avatar
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      Quote Originally Posted by six6guy View Post
      Yes. My brother has this setup, he is in the central Washington hills (Wenatchee area). We just setup a 100vac timer to control the pump, he adjusts the timer to match sunlight hours. It works pretty good.

      Brad
      Brad he has to be using it as a heat exchanger with something other than water in the pipes or the water would freeze at night, or the whole thing would have to be set to drain completely

    11. #31
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      The big problem that I can see with solar heating pipes is the big swing that could occur from day to night, let alone the swing based on ambient air temps. If there was some way to use an auto thermostat to control a pump gph then it might work.

      I know that the ambient air temps in the koi house can go from 50* to 90* in 24 hours; taking tank temps up or down by about 7*> 8* in the process. I can't imagine what solar pipes might do depending on the day and where you live.

      I like when it goes up in temp, then the heaters don't kick in. They're set at a minimium of 58*

      G

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