Reef urchin

Discussion in 'Invertebrates' started by Martinsreef2, 17 Feb 2008.

  1. Martinsreef2

    Martinsreef2

    Joined:
    30 Jan 2008
    Posts:
    44
    Likes Received:
    1
    Location:
    Motherland... UK
    My reef urchin is doing something Ive never seen before, sheding his spines and as you can see below, the new ones are smaller. Now before he was in this set-up, I had him in my old 120 gallon reef but now since he's been in my 29 gallon Nano. Question is, is he now doing this due to lack of space?

    Before;

    00012-1.gif

    and this morning...

    00011-1.gif

    Has anyone else had other urchin species do this?
     
    Mike likes this.
  2. Guest




  3. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    70
    Location:
    Cape Town
    Hi Martin - not too sure - it could be some stress of some kind that makes it shed it's spines..... Perhaps the change from your 120g tank to the nano? Don't think it is space related.

    Are there any water parameter differences between the 2 tanks?
     
  4. Shaun

    Shaun Retired Moderator

    Joined:
    29 Aug 2007
    Posts:
    5,274
    Likes Received:
    15
    Location:
    KZN
    I know some urchin can be used as an indicator for water quality as they are very sensitive to change, must be stress as jacquesb said.
     
  5. Warr7207

    Warr7207

    Joined:
    28 Dec 2007
    Posts:
    12,781
    Likes Received:
    31
    Location:
    JHB
    Is it a algae eater ? may be the 29g cannot create enough algae for the beast.
     
  6. OP
    Martinsreef2

    Martinsreef2

    Joined:
    30 Jan 2008
    Posts:
    44
    Likes Received:
    1
    Location:
    Motherland... UK

    That would be the Ammonia spike Ive got... 0.25ppm.
    :blushing:
     
  7. OP
    Martinsreef2

    Martinsreef2

    Joined:
    30 Jan 2008
    Posts:
    44
    Likes Received:
    1
    Location:
    Motherland... UK
    ..


    ..
     
  8. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    70
    Location:
    Cape Town
  9. Reef Maniac

    Reef Maniac

    Joined:
    15 May 2007
    Posts:
    2,899
    Likes Received:
    114
    Location:
    Bloemfontein
    I think both...
     
  10. OP
    Martinsreef2

    Martinsreef2

    Joined:
    30 Jan 2008
    Posts:
    44
    Likes Received:
    1
    Location:
    Motherland... UK
    No, there's pletty of algae to eat in there!
     
  11. Obi-Wan

    Obi-Wan

    Joined:
    15 May 2007
    Posts:
    318
    Likes Received:
    23
    Location:
    Cape Town 7442
    Hope my reply is not too late to help you.

    Your specimen is not doing it due to space constraints...but it is related.

    Smaller volume, less stability inherent in system, RIGHT?

    Ideal Parameters:

    SG - close to, or full strength
    T - species origin dependent, on Tropical Reef
    Alkalinity - Min NSW levels 2.5mEq/L
    NH3,NO2,NO3 - 0 0 minimal

    and absolute MINIMUM heavy metal presence!!!

    I have had it happen, it is NOT PLEASANT.
    Outcome is often fatal, and usually happens in a matter of days.

    Here's some reading to help you

    Ron Shimek's Sea Urchin article


    Either way: Good luck in re-establishing stability, in your urchin's environment.

    Read the article, return to forum with results of your efforts.
     

Recent Posts

Loading...
Similar Threads - Reef urchin Forum Date
Long spine urchin reef safe?please help Invertebrates 9 Jul 2012
Aquaforest 22kg Reef salt R995, Probiotic R1,350 this weekend only and AF open day Sponsor Specials Yesterday at 10:16
Red Sea Reefer xxl 750 General Off Topic chats Yesterday at 05:55
Unknown Reeftek Skimmer General Discussions and Advice Friday at 15:29
[Wanted] Reef Octopus MF800B reactor ► Sponsor Request Forum Friday at 08:17
WC Reef Club lucky draw Local clubs, frag swaps, meets. 16 Jul 2017
Gif_Hasie's 4ft Reef Tank Project Medium Tanks 14 Jul 2017