New Tank ...Falling Calcium

Discussion in 'General Discussions and Advice' started by wade jooste, 1 Feb 2011.

  1. wade jooste

    wade jooste

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    Hi PPl

    New tank is cycling,about 2 weeks now .Started with 20 kg cured LR and added another 20 kg uncured LR....ammonia and nitrite comming up nicely...Alkalinity at 6....BUT what worries me is calcium levels have declined from 440...380...to 320 last night...is this normal during the cycle or should i dose calcium?...if so what is the best method (dont have reactor or stirrer)?...Im just worried that the corraline algae will be affected.:eek::eek:
     
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  3. butcherman

    butcherman Moderator MASA Contributor

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    is the coraline growing well?
     
  4. wade jooste

    wade jooste Thread Starter

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    There is quite a lot on the LR but cant say if there is any new growth...Lights are off most of the time...only put them on when I want to fiddle with the aquascaping....Would this affect the corraline as I know it needs light to flourish?
     
  5. Tony

    Tony

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    Are you dosing anything for alkalinity?

    Is your water cloudy at all?
     
  6. wade jooste

    wade jooste Thread Starter

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    Not dosing anything...the water is nice and clear
     
  7. Tony

    Tony

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    Over how long a period have you noticed the drop? Has it been overnight or over a period of weeks? Are you running a skimmer at all?
     
  8. wade jooste

    wade jooste Thread Starter

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    Tanks only running 2 weeks.....started dropping when i added the uncured LR on Friday.....Running a AquaExcel 1600 skimmer...
     
  9. Tony

    Tony

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    There's probably stuff or your rock that is using calcium like coralline. You skimmer can also remove calcium. You can start dosing a calcium and alkalinity supplement like TM bio calcium which provides everything for your tank or seperate products.

    Incidently, what is the p.H of your tank?
     
  10. wade jooste

    wade jooste Thread Starter

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    PH is at 8.5 constant
     
  11. Tony

    Tony

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    The high p.H could be causing your calcium to fall out of solution
     
  12. mandarinman

    mandarinman

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    so you need to dose sodium carbonate or sodium bicarbonate supplement and dont forget to dose magnesium as well otherwise you will constantly have problems
     
  13. wade jooste

    wade jooste Thread Starter

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    PH has been at this level since I started the tank up with saltwater...using Tropic Marin brand.....
     
  14. Tony

    Tony

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    Wade, how are you testing your p.H
     
  15. SchyffS

    SchyffS Reef Aquarist

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    May I assist.
    I have to assume the following:
    Mg = 1100
    Ca = 320
    Kh = 6
    Ph = 8.5
    The calcium is being used by the corraline algae(normal)
    My advise, increase the following parameters:
    Mg = 1400
    Ca = 420
    Kh = 10
    Increase the values slowly, one parameter per day until you reach targets. Afterwards maintain kH and Ca.
    Its normal for the ca to decline daily
    Posted via Mobile Device
     
  16. wade jooste

    wade jooste Thread Starter

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    @Tony...Im using a sera test kit...Would a ph probe be better?..or what test kit is accurate?
     
    Last edited by a moderator: 26 Nov 2015
  17. Tony

    Tony

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    Wade, a p.H meter is definately more accurate than a test kit and cheaper than a probe. A lot of pet shops sell them or you can look on Hanna's web site. They're based in Bedfordview but they are cheaper than some pet shops so shop around.
     
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