Originally Posted by
m0nk
http:///forum/post/2842598
Likely just generic sponges. They're not bad, they're filter feeders and are likely helping, if anything. It could mean though that you have excess nutrients in your water column, but I wouldn't worry about them. I have them all throughout my overflows too, but I know I have excess nutrients in my water, my fish are pigs....
that makes me feel better, i thought they were something invasive. One day i had a few in the sump and the next BAM its full of em. And nothing good everr grows that fast so i thuoght ooooooo no.
I probably do have excess nutrients. my clownfish are pigs too.
thanks