SPS Receding From the Middle Out

Discussion in 'SPS Corals' started by Clown trigger, 6 Apr 2016.

  1. Clown trigger

    Clown trigger

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    Hi guys

    Wonder if some one can help me with this problem. I set up my new system about a year ago. I Used red sea coral pro salt to make my salt water and red sea sand for my substrate. I let my system go through the cycle and then added SPS. My SPS where doing so well for 3 months and growing like weeds.
    I bought more SPS for the tank and added them. About 2 weeks later my SPS started receding from the middle of the coral out, the SPS was loosing tissue but still had polyp extension and color. LPS and softies are doing well.

    I tried adding new pieces of SPS in recently and the same thing is happening.

    Has any one had the same issue, or can assist with my problem.
     
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  3. Ridwaan

    Ridwaan

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    Did you have a spike in your KH levels?

    Also post some pics, could also be pests eating away at your sps...
     
    tekkengal likes this.
  4. viper357

    viper357 Admin MASA Contributor

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    Agree with Ridwaan, could possibly be a pest like flatworms, crab, red bugs etc.

    Do you test your parameters like Calcium, Magnesium, Alkalinity, Nitrate, Phosphate?
     
  5. Clown trigger

    Clown trigger Thread Starter

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    Thanks for the reply guys.

    All my level are perfect. I'm running a carx.
    Don't have pics as i have thrown all the dead sps away and dont have anymore.I even took my water to be tested at the LFS and came out perfect there too. I bought a UV sterilizer as i thought it could be a parasite too that was in the water column, can't see any pest on the skeleton either. But haven't had SPS in the tank for more than 4 months and when i added a new piece in it just started receding from the middle again. I will test my levels again and post them.
     
  6. red pepper

    red pepper

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    What is KH, Cal, Mag, Phosphate, No3, Salinity and Temperature.
    How often do you do water changes?
     
  7. Henkie

    Henkie

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    Parameters will help a lot.

    Also what lighting are you using?
     
  8. Rors

    Rors

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    Generally RTN caused by a ALK or a temperature swing will begin at the Base.... could possibly be a pest as stated above but a pest generally would destroy one acro at a time, not all of them at the same time. Which makes me think this is a parameter related issue

    Just my 2cents....I reckon regular testing of parameters for anyone serious about sps keeping is a must. Once your desired parameters are reached you should continue dosing your CA and ALK and MG via a automatic doser. The below link will assist you in acquiring your Base parameters and then from there you can establish your daily dose.

    http://reef.diesyst.com/chemcalc/chemcalc.html

    One thing I always do is dip mycorals whilst acclimating and adding them to my tank..Coral RX is the stuff to use.
     
  9. Clown trigger

    Clown trigger Thread Starter

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    Ok so went to my LFS to get water tested again.

    Readings are:
    KH: 9.4
    CA: 435
    Mag: 1425
    Ammonia: 0
    NO3/4: 0
    Phosphate: 0
    Temperature: 26

    Was using LED T5 Hybrid but moved to Aquamedic T5 3x39W about a week ago.
     
  10. red pepper

    red pepper

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    I am no expert but this is my opinion.
    You need NO3 and Phosphate. 0 reading is no good you are starving the coral. I would also drop Magnesium closer to 1350, and keep it there.
    I would double the fish feeding that you are doing for a week, then by another 1/4 the next week. Measure Phosphate and Nitrate and if you are getting a reading hold the feeding regime, and maintain those low Nitrate and Phosphate readings. If still no reading then increase again. make sure your test kits are current, not expired. Once you see growth again, or start with new SPS and no dying off, make sure your iodide levels are tested and maintained weekly, at recommended levels. If need be reduce feeding slowly, if Nitrate/Phosphate levels are to high, but you need readings.

    It normally takes two to three weeks for new SPS to die when you have zero phosphate and nitrate. You need detectable readings.
     
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  11. 2una

    2una

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    PH not dropping too low?
     
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  12. tekkengal

    tekkengal Moderator

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    +1 on this.
    Lost some corals recently because of this :(
     
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