ID please

[coopdogyo]

Please ID and is it evil

 

[Superstretch18]

Hard to tell from that photo, but mysid shrimp maybe? Do they look like this:

If that's what they are, then they are not harmful; they are a good sign. Great natural food source for your fish...

 

[coopdogyo]

no they look like little feather dusters.
Sorry the pic is so bad but they are in my over flow

 

[NCSUsalt]

pineapple sponges?

 

[coopdogyo]

A slightly better pick
Pineapple sponges looks the closest is it usual to have so many there are about 100 in my over flow

 

[coopdogyo]

i think they are pineapple sponges are they good