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Interesting video that was posted today by Tidal Gardens today about palys and zoas about naming thought it was interesting and would share. If anything it is some cool close up footage of zoas.
Requirements are similar to zoas, so low (depending on light of course), good flow, and they'll spread. In my experience they are not quite as prolific as zoas, but back then my tank was in poor shape.
Yeah once my algae was gone they turned on my yellow polyps, in some of the descriptions I've read it's mentions that they are often found to be consumed before any other polyps in a tank
Well, they are crabs. I maintain (somewhat controversially) that there is no such thing as a 100% reef safe crab. You don't build a Sherman tank and call it a teddy bear. Lol