Tuxedo Pincushion Urchin - Sphere Urchin or Globe Urchin

[Dive_Master]

I have the opportunity to put one of these urchins into a 75 tank that suffers from some hair algea that I cannot get rid off.

Is a good idea?

[icemark]

Most urchins tend to be bulldozers, knocking over anything that they can and pulling down carefully stacked rock. If you rock is solid they might work.

For hair algae the only thing that has consitently worked for me was a DSB and a lawn mower benny. Infact I had to go back to using tap water for my top off so that there would be some hair just for the benny to eat, since he cleaned it all off everywhere.

[Dive_Master]

My lawnmower blleny would not touch it.

Thanks anyway.