SPS Bleaching due to alkalinity swing seeking advice

Discussion in 'Reef Aquarium Discussion' started by Matthew Dambra, Feb 11, 2018.

  1. Matthew Dambra

    Matthew Dambra Active Member

    Joined:
    Jul 22, 2017
    Messages:
    105
    Likes Received:
    111
    Location:
    South Florida
    Hello all,
    Recently my alkalinity rose from 8.5DKH to 9.5DKH seemingly overnight this morning i awoke to a lot of corals starting to bleach out and my LPS receding dramatically.
    Im not exactly sure how it rose so sharply when i did not change my dosing pumps amount but the guidance i am seeking is my actions to correct it.
    Should i just turn my dosing pump off and keep checking the alk till it goes back down to around 8.5 or should i do some water changes and attempt to lower it more quickly. I think trying to lower it down too fast will just add to the stress and bleaching.
    If anyone has had a similar experience or any advice it would be greatly appreciated.
     

  2. Finhead

    Finhead Active Member

    Joined:
    Jun 30, 2017
    Messages:
    452
    Likes Received:
    317
    Yes just shut your dosing pump off and let it fall naturally.
     
  3. tommyhere

    tommyhere Valuable Member Build Thread Contributor

    Joined:
    Jan 22, 2016
    Messages:
    1,028
    Likes Received:
    428
    Only 1.0 dkh is not to bad.
    If it' happening all the time it could be a problem but just one rise overnight, unlikely. Especially went u say lps receding in one days time, that's pretty quickly for them to react. Look for another problem like temp or stray electric current etc?
    Also make sure u test alk the same time as u did the day before.
     
    DSC reef likes this.
  4. Yati

    Yati Active Member Build Thread Contributor

    Joined:
    Dec 13, 2017
    Messages:
    197
    Likes Received:
    295
    Location:
    Sacramento
    To piggy back off @tommyhere 1.0 swing wouldn't have that effect overnight, there is a underline gradual effect that is being overlooked. If you think its really the DKH stop dosing and you can also do a small water change. Test your parameters, have them tested from you LFS if needed.
     
    tommyhere likes this.
  5. reefwiser

    reefwiser LMAS R2R Supporter Reef Squad R2R Excellence Award Partner Member 2018 Article Contributor

    Joined:
    Nov 24, 2013
    Messages:
    5,690
    Likes Received:
    5,392
    Location:
    Louisville,Kentucky
    What I have found is that DKH swings because the corals change in their uptake due to their health. When corals are first placed into a tank it can take up to a month before that begin to grow and start up taking cal and alk. Introducing corals to a tank can cause other corals to stop their growth also for a time. So you can chart how your corals health is doing by how your alk reading is from day to day. So actually the swing upwards her is due to the corals health stopping the uptake of alk and cal and the bleaching is due to the health and not from a rise in alkalinity.
     
    Mal11224 and Orbela like this.
  6. ca1ore

    ca1ore Valuable Member R2R Supporter CTARS Member R2R Excellence Award R2R TV Featured Article Contributor Build Thread Contributor

    Joined:
    Oct 28, 2014
    Messages:
    3,715
    Likes Received:
    3,902
    Location:
    Stamford, CT
    Bleaching or dying ...... obviously not the same thing,
     
Draft saved Draft deleted

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice
Loading...