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Results 1 to 7 of 7
  1. #1

    Join Date
    Aug 2010
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    Default Raising pH in Pond


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    Hi, I have a pond which had 7 Koi in it. They have been looking a little under the weather recently so I checked everything and the pH had dropped below 7. I had read that they prefer alkaline water so I am looking to increase the pH by adding in some limestone. (the fish seem fine now, but I still want to get the pH to where it should be)

    Can anyone let me know if adding the limestone is going to be a problem at all and if it is ok, how much should I add?

    Cheers

  2. #2

    Join Date
    Feb 2010
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    Ypsilanti, Michigan
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    What pH did you measure?
    300 gallon mega tank: sailfin pleco, clown loaches, silver dollars, roseline sharks, congo tetras, new world cichlids
    125 gallon office tank: Africian cichlids, synodontis catfih
    75 gallon community tank: bolivian rams, black skirt tetras, dwarf neon rainbowfish, corys, harlequin rasboras, otos, bristlenose and bulldog plecos, assassin snails, various shrimp
    60 gallon goldfish tank: fancy goldfish

  3. #3

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    Default


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    it was 6.8

  4. #4

    Join Date
    Feb 2010
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    Cancer - Epilepsy - Foster Care - Gynecological Cancer - Rett Syndrome - Brhino   

    Default


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    What was it before? Generally a stable pH is more important than an exact value. Unless it's dropped recently I wouldn't mess with it - you're more likely to send it too far the other way.
    300 gallon mega tank: sailfin pleco, clown loaches, silver dollars, roseline sharks, congo tetras, new world cichlids
    125 gallon office tank: Africian cichlids, synodontis catfih
    75 gallon community tank: bolivian rams, black skirt tetras, dwarf neon rainbowfish, corys, harlequin rasboras, otos, bristlenose and bulldog plecos, assassin snails, various shrimp
    60 gallon goldfish tank: fancy goldfish

  5. #5

    Join Date
    Jan 2011
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    Default


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    Trebor,

    Pond's naturally have a tendency to move towards acidic. How quickly depends on the source of your water (whether it is hard and buffered, or soft) and your stocking/feeding levels. It is the by-products of your fish that releases lots of free Hydrogen atoms into the water - causing your pH to drop. Adding crushed shell or limestone to your filter should do the trick. There are more details here: http://www.watergardenersbible.co.uk...in-a-koi-pond/

  6. #6

    Join Date
    Oct 2007
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    Default


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    Could you give us some specifics about your pond please.
    How many gallons
    Surface are or dimensions
    How big are the koi
    Any other fish
    Water ph from your tap
    What size pump
    Filter type
    Does the pond collect leaves
    How old is the pond and fish

  7. #7

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    Jun 2008
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    Northwestern Louisiana
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    Do you do perform water changes?
    *75g- 20g sump -- WC/CB mix Geophagus Abalios colony, Queen Botias, Yo-yo Botias, Polka-Dot Botias
    *29g- 10g sump/Penguin 350 -- Empty
    *40b -- Empty
    *120g Deep -- Empty

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