Short spine urchin

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brianf40us

Aquarium Advice Activist
Joined
Nov 8, 2008
Messages
173
I just bought one today and wow do they suck down the algae. Its a sweeper with spikes AWWWWWWWWWWWWWWWWWWWWWW
 
I just added my urchant yesterday and i noticed today that one of his spines is laying over to the side. he has moved around a little since i put him in but not to much.

Params
nitrate- 15-20
ph- 8.3
ammonia- 0
nitrite- 0
temp- 78-79

I know they are nocturnal so would they move around more at night
 
How do these urchins eat i am trying to feed him some seaweed sheets but where is his but and what is his head hahahaha. I put the sheet next to him and tried to slide it under him and his spines started to move towards my tweezers but i dont know if he is eating or not.

thanx everyone
 
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