Brown stuff (maybe algae) on my sea sponge.

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porous_gravel

porous_gravel

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I got a sponge a couple weeks ago. Everything seems to be going well, the sponge even attached to the rock I strapped it to. The one thing I’ve noticed, is there seems to be some algae on top of the sponge. Is this a problem? Should I move it to a lower light area?
 
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WHAT’S USUALLY THE FIRST CLUE THAT SOMETHING IS OFF IN YOUR REEF?

  • A fish’s behavior or appetite changes

    Votes: 2 6.7%

  • A coral looks different or stops opening normally

    Votes: 20 66.7%

  • Water clarity or surface appearance changes

    Votes: 4 13.3%

  • Equipment sounds or flow seem different

    Votes: 3 10.0%

  • A test result catches my attention

    Votes: 7 23.3%

  • Algae or other growth starts changing

    Votes: 6 20.0%

  • I usually notice when the problem is already obvious

    Votes: 1 3.3%

  • It depends on what’s going on

    Votes: 6 20.0%

  • Other (Post in the comments)

    Votes: 1 3.3%
See comments…

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