Help what is this?

MitchelNL

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Any idea what this is? Almost al coral s have this. Looks like spiderweb with dust on it 477B56DD-14EC-473F-8941-363BD9C444CD.jpeg
 
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MitchelNL

MitchelNL

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Good advice, here with white lights on
 

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

  • I currently use a CO2 with my reef tank.

    Votes: 1 3.4%
  • I don’t currently use CO2 with my reef tank, but I have in the past.

    Votes: 0 0.0%
  • I have never used CO2 with my reef tank, but I plan to in the future.

    Votes: 1 3.4%
  • I have never used CO2 with my reef tank and have no plans to in the future.

    Votes: 25 86.2%
  • Other.

    Votes: 2 6.9%
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