Here are some interesting things that grow in our tanks that aren't readily visible. You may even have wondered if they are okay or not. Unless I state differently, most items taken in my reef are fine or I would have eliminated them. Asterina starfish. They self-propagate by ripping themselves apart and grow more arms from the center. For the most part, they are well-behaved. Sometimes you'll see them on zoanthids, and it might be good to rescue the polyps manually. If they appear ...
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