Do urchins eat macroalgae?

[blueheaven]

Hi guys, just want to know whether urchins will eat macroalgae cause I am thinking of getting one for my sump to remove the coralline

[zarkon]

Don't think so... unless it's attached to a rock.

[blueheaven]

My chaeto are not attached to anything

[CKS]

which urchin?

i used to have long spined urchin that will feed on macroalgae

[zarkon]

what I observe is that they will eat most of the algea ... that grows on the rocks or any surface.. I think it's because the mouth is at the bottom.

If your macroalgea is floating around, I think it's safe right? The spine will push the algea aside before it can consume it.

Had the long spine urchin to ... super rock cleaner!

[blueheaven]

I gave up the idea

The urchin would make refugium maintenance troublesome

Thanks for the input

[ervine]

hm.. mine eats coraline more than algae it seems... but never fed it macroalgae before so not sure...