Yellowish spots on rocks

D-reefer

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Hello Reefers, could someone tell me what’s this growing on my rocks?

IMG_4874.jpeg
 

Stealthreefer

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Sponges.
I think the common name is pineapple sponges
Good for tank. If they start taking over your nutrient levels are too high.
 
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When to mix up fish meal: When was the last time you tried a different brand of food for your reef?

  • I regularly change the food that I feed to the tank.

    Votes: 14 30.4%
  • I occasionally change the food that I feed to the tank.

    Votes: 18 39.1%
  • I rarely change the food that I feed to the tank.

    Votes: 11 23.9%
  • I never change the food that I feed to the tank.

    Votes: 2 4.3%
  • Other.

    Votes: 1 2.2%
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