how low magnesium affects corals

Discussion in 'General Discussions and Advice' started by mandarinman, 4 Jun 2013.

  1. mandarinman

    mandarinman

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    i thought my tank had an infestation of flatworms or something similar because my kh was correct and calcium was correct and two of my corals had some rtn from the base. i tested my perams and my mg was 1050. so i did some research. guess what !? low mg causes colour loss and rtn.
     
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  3. Fraser W

    Fraser W Swazi Reefer

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    Thanks for sharing your findings
     
  4. dallasg

    dallasg Moderator MASA Contributor

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    if i may ask what the KH and Ca are...
     
  5. Riaanv

    Riaanv

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    Inmy case my hammer coral showed the first sign (before sps) - lost 4 heads in about 2 days
     
  6. mandarinman

    mandarinman Thread Starter

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    no probs. 10.2 kh and 450 cal
     
  7. mandarinman

    mandarinman Thread Starter

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    i read weakest heads go first.
     
  8. Express Reef

    Express Reef

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    weird, do you not dose mag? I dose daily, due to coraline algae growing and consuming 20ppm a day:p
     
  9. Mr_Armani777

    Mr_Armani777

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    How do you dose this stuff?
     
  10. mandarinman

    mandarinman Thread Starter

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    i took it off doser and put it into top up but due to damp cold weather not much evaporation so i put it back on doser last night.
     
  11. Express Reef

    Express Reef

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    eish, hope you can save your SPS boet, best off luck
     
  12. mandarinman

    mandarinman Thread Starter

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    i was dosing 70grams a week to keep it at 1360 but with it having dropped so low i am upping daily dosing to bring it into line. i will test tonight again
     
  13. dallasg

    dallasg Moderator MASA Contributor

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    dont go more than 20ppm per day
     
  14. mandarinman

    mandarinman Thread Starter

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    too late. i set my doser to dose 30 mls once every hour so my mg is back to 1360. i suppose its like acclimatising a new coral. all the sps polyps are extended and my zoas and clams are open so i suppose the fact that i dosed over 24 hours worked.
     
  15. Bendor

    Bendor

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    @mandarinman

    How is everything going since your balls to the wall mg increase? Just tested mine for the first time since startup 7 months ago. 1020. Planning to dose first mg and then sodium bicarbonate for KH of 6.1
    Ca at 450
     
    Last edited by a moderator: 26 Nov 2015
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