You know you want me!

How long have you had these in our system? Just want to know if they'll lose color before I buy. I had my black hole sun acans lose the green ring and come back.
 
:eek::eek::eek:
What kind of lights are they under in pic?
 
So it's a normal solar flare and you find this variation within the colony?
 

WHAT KIND OF SUBSTRATE ARE YOU RUNNING ON YOUR TANK?

  • Bare bottom

    Votes: 5 26.3%
  • A shallow bed of fine sand

    Votes: 4 21.1%
  • A shallow bed of coarser sand

    Votes: 3 15.8%
  • A deep sand bed

    Votes: 3 15.8%
  • Mixed substrate or varying sand depth

    Votes: 4 21.1%
  • 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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