KH

Discussion in 'Water Parameters and Additives' started by xtreme, 15 Jul 2011.

  1. xtreme

    xtreme

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    Hi all

    I always read threads with problems with low Ca, I never had a problem with Ca, but my kH dropping fast.

    My wife phoned me yesterday and told me the birds nest coral branches is getting white and other thing looks bad to so I went to the shop and take a water sample and my kh is 4.8 all the other parm. is fine, why would that be?
     
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  3. Tremayn

    Tremayn

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    whats your magnesium and calcium at?
     
  4. Sammy

    Sammy

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  5. Tony

    Tony

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    Are you adding calcium and alkalinity supplements simultaneously?
     
  6. xtreme

    xtreme Thread Starter

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    nope never added calcium before, only add Alk,

    Temp 27.4
    SG 1.026
    pH 8
    Kh 4.8
    NH4 0
    NO2 0
    NO3 10ppm
    PO4 0.01
    Ca 430
    MG 1350

    System holds about 50KG fiji and kenya LR
    Nice Correline algae build up
    Special reef floor aragonite
    2x39WT5 corral blue reeftek
    1x 150W 20K MH
    system DT 100ltrs
    sump 100 ltrs
    skimmer ratted for 900ltr setup with mod to the skimmer for extra wwwoooma
    deep sand bed with sea fern algae
    running carbon, po remover
    thats it
    lol

    oh and 2 ocellaris clowns
    1x sixline
    1x pshycedelic
    6x turbos
    1x birdsnest with a crab, lol
    1x candy
    1x devil leather finger (s)
    1x leather mushroom soft
    few sps frags, like 3 or 4
    White bubble that my bi color angel rip apart
    few zoas
     
  7. 459b

    459b Moderator MASA Contributor

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    thats where you KH is going!

    How often do you do water changes? How often and how much kalk do you dose?

    Slowly bring KH up using buffer or the sodium carbonate method. ONce youve reached the desired KH, maintaion it with kalk. Measure KH often while doing this until youve obtained the right dosing of kalk to maintian KH.
     
  8. xtreme

    xtreme Thread Starter

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    Thanks David

    now I know who is stealing my kh,,,lol

    Still got some stuff from PowerLab
     
  9. slless9

    slless9

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    hey there....Im having similar issues, setup is similar to yours...Hve yuo had any luck with the above, then i need to try the same as welll

    regards
     
  10. xtreme

    xtreme Thread Starter

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    I just dose alkalinity 1tsp per 100l with the powerlab product and raise alk with 1.5, best is to do water changes, but my system is use to 1 a month 20% water change
     
  11. ChrisNell

    ChrisNell

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    Had my KH (and Ca) dropping quite fast and decided to remove all corraline algae (DT AND sump), except on LR. Took me around 6 hours! I also hope this would assist in KH and Ca staying more stable. I am adding buffer via top-up and Ca on a daily basis.
     
  12. Tony

    Tony

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    Poorly circulated and deep tanks also have low p.H and KH problems due to the build up of CO2 which suppresses p.H which in turn drops your KH
     
  13. xtreme

    xtreme Thread Starter

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    Thanks Tony, it's good to know that as well.
     
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