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Thread: How much water to change during rainstorms?

  1. #1
    Daihonmei aquitori's Avatar
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    How much water to change during rainstorms?

    How much water to change during rainstorms?

  2. #2
    Nisai
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    Depends on the rain. You need to collect a sample and test it for pH, and everything else you can. Rain tends to be acidic, so it will raise your pH. Baking Soda can bring it back down. Size of the pond, and surface area need to be considered.
    So, check your pH before the rain, and after, and depending upon your water source change as needed to return to your normal pH.
    Ed

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    Daihonmei
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  4. #4
    Daihonmei aquitori's Avatar
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    Quote Originally Posted by Beniguy View Post
    Depends on the rain. You need to collect a sample and test it for pH, and everything else you can. Rain tends to be acidic, so it will raise your pH. Baking Soda can bring it back down. Size of the pond, and surface area need to be considered.
    So, check your pH before the rain, and after, and depending upon your water source change as needed to return to your normal pH.
    Ed
    Thanks Ed for the sound advise...We have been getting alot of rain in the past 8 hours.

  5. #5
    Daihonmei MikeM's Avatar
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    Luke: California rain is different from Florida rain... I guess.

  6. #6
    Oyagoi CarolinaGirl's Avatar
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    My rain water is acidic.....but it is also very similar to my ground water. If it rains really hard, I buffer the pH a little with some baking soda, but my koi are pretty used to a low pH.

  7. #7
    Nisai jomoma's Avatar
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    don't change your water because of rain.

    I'm here in portland and it rains for months I have gotten a 1' of water level raised in a day (i have a upper pond though). Rain is better than tap and only in big city west of the cost should worry about acid rain.

    If you live in LA you should still get your clouds off the coast, so you should only worry if your inland a bit.

    I get low ph in the winter and I have actually wonderd if it was because of the rain. Hey, don't you have the baking soda thing backwards?

    If you have run off thats a differnt beast. change your water and fix your pond.

  8. #8
    Nisai
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    Luke,
    In a perfect world, and a perfect pond I would agree. Not overstocked, ammonia at ZERO, big enough to absorb the differential.
    For my pond I agree, because I build an awning over my pond so it gets no rain water.
    But please remember, ammonia become more toxic as the pH increases.
    If the pond is over-stocked (gasp!), potential danger exists. Measure, then decide.
    Ed

  9. #9
    Jumbo jnorth's Avatar
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    You'd really need to know your water parameters before it rained. Then adjust accordingly. Or just watch the koi. If they flash etc then you might want to buffer it or do a water change.
    Koi-Unit
    My personal koi page Updated 7/8/07
    ZNA Potomac Koi Club

  10. #10
    Honmei
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    ?????????????????????

    Quote Originally Posted by Beniguy View Post
    Rain tends to be acidic, so it will raise your pH.
    Ed
    Hi Ed, this does not make any sense to me. If the rain is acidic it will lower your pH, right?

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