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Thread: Over wintering

  1. #1
    Jumbo Akai-San's Avatar
    Join Date
    Aug 2004

    Over wintering

    What is required for over wintering outdoor ponds where temperatures reach snow fall levels? How do you protect or insulate outdoor filters? Something I never really had to think about in Hawaii...But Japan is a different story.

  2. #2
    Sansai marco's Avatar
    Join Date
    Oct 2004
    I cover my pond with polycarbonate and protect my filter with polystirene , but I don't close it too much just to allow gaz ecxanges. I have a heater and try to keep the water around 18 C in october and november and will let go slowly down to 7 C for 7 weeks, them I will increase it slowly until spring.

    Hope it's the good way , just tell if you have a better idea.

  3. #3
    Join Date
    Jul 2005

    Smile Winterize

    I have a 6000 gallon pond 4 ft deep. I disconnect the filter completely around Thanksgiving and let the pump run continuously. It certainly reduces freezing even in O F outside temperature. I do not use any kind of pond heater. I also loosely cover the pond with two layers of 3 mil polyethylene sheets with about six 2X4 wood plank support to prevent snow and leaves from falling in the pond. I change water and start the filter in April. I have been doing this for five years in southern NJ and never lost a fish. Hope it helps.

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