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  1. #1
    Senior Member LadyP's Avatar
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    KH / dKH Alkalinity Offchart...Help!!!

    Hi,

    Tank has just cycled. (77G)
    Rock is cured now..

    Amoniac =0
    Nitrite =0
    Nitrate = about 10

    T = 80.2
    PH = 8.05 (rising with seachem buffer)

    Calcium = 350 (a bit low)

    KH = ..... 20-24!!!...I'm completly OFFCHART!

    Is this normal?...What is wrong...
    Natural See Water is about 8...

    Salifert test give me 22 dKH (393.8 ppm KH)
    Aquarium Pharmaceutical inc give me 20 dKH (358 ppm KH)

    I have 6 stage filters that works good (i think...)
    Filter water with 000-001 ppm

  2. #2
    Senior Member volitan's Avatar
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    how can salifert test kits give you 22 it only reads up to 16 on the chart?I had the same problem and I brought up my calcium...then your ALK will go down...Its directly related..slow down on the buffer for the ph..it will rise as you calcium rises
    Derik...

  3. #3
    Senior Member LadyP's Avatar
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    Volitan...please

    1 full seringue = 16
    1/2 = 8

    16+8 =24..

  4. #4
    Senior Member volitan's Avatar
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    sorry out to lunch that why I asked

    Are you using IO salt?the calcium is low to start with....360 i think...
    Derik...

  5. #5
    Senior Member volitan's Avatar
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    maybe consider dripping kalkwaser...i just bought a dosing unit on ebay for 50$ for that exact problem you have.....brought up my cal and my alk whent way down and my ph up
    Derik...

  6. #6
    Senior Member volitan's Avatar
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    http://cgi.ebay.ca/ws/eBayISAPI.dll?...e=STRK:MEWN:IT

    Heres what i bought...if ever it would interest you Ladyp
    Derik...

  7. #7
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    My alk was 24, started calcium. I brought this up to 425ish. This fixed the problem very quickly. I believe it was back down to 9 in less than a week.

  8. #8
    Senior Member reefmutt's Avatar
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    LadyP have you been adding any buffers to the tank during cycling??
    I don't like the idea of simply adding calcium to a tank with a high alkalinity for two reasons.
    1 it may not bring down the alkalinity, and 2, if it does, it is because you have forced the excess of buffers out of solution by pushing in the calcium. this is not good for the corals, nor for the pumps and heaters as they wil get encrusted with hard calcium like deposits that have precipitated out of solution.
    The best course of action is a very large water change-or 2 or3 to bring down the alkalinity and then add your calcium and buffers to keep the levels balanced at around 9dkh and 420 calcium.
    Matt.

    Old system torn down to make a playroom.. planning a 62x42x28 high

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