Good Urchin

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hey guys i know urchins eat Coraline and algae. but my one also seems to love the tiny bit of cyno i had on one rock he went straight for it. now i have nothing.:thumbup: has anyone else's urchins done the same.
 
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I also think my urchin chows cyano. Since I got him i never had cyano problems
 
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Not sure of cyano, but beware. The two types common in our east coast rock pools, would be those that eat algae, and those that eat sponges. Roughly speaking The longed spined ones are the algae eaters. The shorter spined sponge eaters, unless fed an appropriate diet will die.
 

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