How to attach gsp-rock

hey guys whats the best way to attach a piece of GSP I just picked up to a rock in my tank its a big flat rock and the piece of GSP is prolly about 2x4;D

 

i used a rubber band to attach mine, but some people will use super glue-gel, and ive seen people use the rock epoxy many different ways

 

I use super glue gel.

 

I have used super glue gel as well

 

I used both rubber bands and glue,both work great.

 

If I use the super glue should I do it out of water or jar do it in the tank or does it matter?

 

just put a blob on and squish it where you want it,i've glued both in and out of the tank.You gotta be quick underwater as it skins fast.

 

I've also heard of toothpicking it to holes in the rock.

 

I use Super Glue Gel and do it outside of the tank. Takes about 10 seconds for the glue to start sticking to the mat of GSP. Then I just place it back in the tank.

 

Do urchins eat GSP???