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Thread: Low KH

  1. #1
    Extreme Koi Member Rank = Yonsai RudeDogg1's Avatar
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    Low KH

    I live in a very soft water area kh about 2-3 out the tap with a PH of 7.2-7.6. I tested my pond the other day and the PH has got pretty high over 8. So Im trying to find a decent way of raising the KH without raising the PH. Because from what Ive read its due to having very little buffer from the low KH. If I use bi carb wont that raise the ph aswell?



  2. #2
    Sorry but anything that raises the KH will also raise the pH.

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    Extreme Koi Member Rank = Yonsai RudeDogg1's Avatar
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    Thatís what I thought

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    Extreme Koi Member Rank = Yonsai RudeDogg1's Avatar
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    Well that killed that idea lol

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    Extreme Koi Member Rank = Yonsai RudeDogg1's Avatar
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    So is there anything I can do or is it safe if the other parameters are ok?

  9. #6
    Extreme Koi Member Rank = Sansai LouiseR's Avatar
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    Low KH can cause pH fluctuations or, worst case scenario, a pH crash. If you raise it with sodium bicarbonate to between 90 - 125 mg/l or 6dH, your pH will stabilise at about 8.4. Much safer for your fish and filtration system IMO.

  10. #7
    Extreme Koi Member Rank = Yonsai RudeDogg1's Avatar
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    Quote Originally Posted by LouiseR View Post
    Low KH can cause pH fluctuations or, worst case scenario, a pH crash. If you raise it with sodium bicarbonate to between 90 - 125 mg/l or 6dH, your pH will stabilise at about 8.4. Much safer for your fish and filtration system IMO.
    Yeah thatís what Iíve done now and going to put a bag of oyster shell in

 

 

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