You got a long spine urchin? Watch out besides eating all the coraline in my tank, mine poked me in my knuckle and I had to have it surgically removed and a month of rehab. They do eat tons of algae. Just keep an eye out when your hands are in the tank.
A month of rehab? thats nuts! I am fine with it eating a bunch of corraline algae, although that algae is a good sign, im a firm believer that it needs to be cleaned for the live rock to work efficiently. Were you able to move your hand at all?
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