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Swimming Decorator crab

I just looked at the tank (behind me) and this decorator crab is swimming at the surface. No he is not dead. How cool is that?
He can do that because he decorated himself with bubble algae, which is filled with air.
I wonder if he knows thats why he is floating. I had to push him down to grab on to a rock.
I took this from the surface, down

Here he is where he is supposed to be.

  1. Paul B's Avatar

    Typhoon Time

    by
    Paul B
    , 01-09-2013 at 10:56 AM (Swimming Decorator crab)
    Today I decided to have a typhoon in my reef. I do this sometimes twice a year and IMO it is the main secret as to what has kept my tank going so long.
    I run a reverse undergravel filter like almost everyone on here! No? Oh I thought everyone did. In any case, this is what I do to keep the tank going. As you can see I have two diatom filters running at the same time. I could do it with one but it takes twice as long. A diatom filter removes anything smaller than a micron which is much ...
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