Hydroids?

kkgaskin90

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Are these hydroids? I never see anything coming out of the tubes. They don't seem to be multiplying. I know I had them at one point because I saw them on the glass in my QT... I had setup my QT with water and a few pieces of rock that had been in my DT.

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858e6f78e4f040499f390696c6e1d3a4.jpg
 

WHAT KIND OF SUBSTRATE ARE YOU RUNNING ON YOUR TANK?

  • Bare bottom

    Votes: 5 20.8%
  • A shallow bed of fine sand

    Votes: 6 25.0%
  • A shallow bed of coarser sand

    Votes: 5 20.8%
  • A deep sand bed

    Votes: 3 12.5%
  • Mixed substrate or varying sand depth

    Votes: 5 20.8%
  • Some other substrate (posted in the comments)

    Votes: 0 0.0%
  • I don’t have a reef tank yet

    Votes: 0 0.0%
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