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Thread: Soft Water? Hard Water? --- I don't know what I have!

  1. #1
    Sansai KoiKisses's Avatar
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    Soft Water? Hard Water? --- I don't know what I have!

    Along with the koi clay I ordered last week, I received my first GH and KH test kits. After testing for GH and KH, I still can't quite grasp the relationships of whatever GH and KH have with other elements of the pond, except that KH somehow helps stabilize PH.

    My readings are as follows:

    GH - 125.3

    KH - 53.7

    What kind of water do I have?

  2. #2
    Daihonmei PapaBear's Avatar
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    I'd call it much softer than mine Pretty much middle of the road.
    Your kh is in a comfortable zone so long as you maintain a regular water change regime as kh will be consumed by the acids produced in your biochambers. Of course how quickly it will be consumed is a function of your bioload so that is something to adjust accordingly. The clay should raise that number a bit, but the biggest benefit most ponders aim for from it is water clarity and algae control.
    Your gh is close to where I'd like mine to be, a bit harder than some like but mine is roughly double that so yours would be a nice change
    Larry Iles
    Oklahoma

  3. #3
    Sansai KoiKisses's Avatar
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    Hi Pappa Bear! Thanks for the reply!

    What a surprise on the readings!. To me the numbers don't make any sense, but now that I know they appear to be good, I'll keep an eye on their stability. I do regular monthly water changes (13%), and small weekly changes as I use pond water to water my orchids,ferns, and daylilies (they love it!)

    I havent' had an issue with water clarity due to algae this year, and if the clay helps with the current clarity I couldn't ask for more. My goal with the clay was to help put minerals and such back in the water for the koi.

    KH? "consumed by the acids produced by the biochamber". Once consumed, does anything else adjust this KH other than water changes? (I use crushed oyster shells to stabilize my PH)

    Rita

  4. #4
    Daihonmei PapaBear's Avatar
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    Oyster shells and the like will provide slow release carbonates into the water column and act as somewhat of a buffer, but keeping a close eye on your kh/ph values is still important. Buffers and Clays can be beneficial, but they are not a substitute for fresh water. Small but frequent water changes maintain stability much better than the occasional large one.

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