Sea urchin and coraline algae

[reef rico]

I was wondering if i purchase a sea urchin would it eat alot of coraline algae and if so by how much faster will it speed up the process?

[Gordonious]

Which process? The removal of coraline? The spread of coraline? Do you want more or less purple? Might try reading over this thread:
http://reefcentral.com/forums/showthread.php?s=&postid=10956786#post10956786

[pv1191]

I have hear that they eat and spead coraline. I have a pencil urchin in my prop system and he is a one man wrecking machine, turns over everything and plants himself where he wants. Coroline has inproved greatly since I added him but, I'm setting up an semi FOWLR that will his eventual home. I'm tired of turning over frags and colony's because he likes to roam and knock stuff over. Two smaller spiney urchins have not been a problem in my main display.

[reef rico]

Does he drop alot of spikes?