Coralline

I have a royal or halloweeen urchin. It can't keep up. I was told long spines are the most affective.

Long spine urchin kept the coraline in check years ago when I had a 120g tank. It spent probably 95% of it's time on the back and side glass because thats where it grew the most.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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