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cjp847

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What is this? Good or bad?

20210117_181646.jpg 20210117_181653.jpg
 

vetteguy53081

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Looks like a baby rock boring urchin but the pencil does have striped spines as in pic and therefore : Pencil
 

vetteguy53081

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Thats funny I don't remember buying one. Lol. Thanks
Rock boring will hide and imbed itself well , but either can be a hitchhiker.
 

saltyhog

blowing bubbles somewhere
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Rock boring will hide and imbed itself well , but either can be a hitchhiker.

Agree. I had 7 rock boring urchins in my live rock that I used to start a tank several years ago. Within a year they were so big I had to sell them to my LFS.


urchin 8-2.JPG
 

Just grow it: Have you ever added CO2 to your reef tank?

  • I currently use a CO2 with my reef tank.

    Votes: 8 5.9%
  • I don’t currently use CO2 with my reef tank, but I have in the past.

    Votes: 5 3.7%
  • I have never used CO2 with my reef tank, but I plan to in the future.

    Votes: 7 5.1%
  • I have never used CO2 with my reef tank and have no plans to in the future.

    Votes: 110 80.9%
  • Other.

    Votes: 6 4.4%
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