Large polyps in my 150 gallon tank
 

These have been allowed to grow naturally on my LR and am wondering if they are harmful and should be removed. A few are the size of a loonie...wish they were a more attractive colour. Anyway, any thoughts?

just look like plain old palys to me ;) should be fine, as long as you like them :mrgreen:

I've got a cluster of those, they're fine. I keep hoping something eats them, but no....

Seems only the pretty colored ones are the ones that get eaten and the fugly polyps live on...