i dont know what these are

[bishoptaner]

if anyone has a clue tell me if there bad or they dont do anything bad. i just noticed them two days ago. thanks robert

 

[d9sccr]

some type of feather duster?

 

[RicksReefs]

pineapple sponges. good guy unless they plug up the plumbing.

 

[Ludwigia73]

ditto pineapple sponges... filter feeders, sign of a healthy tank.

 

[titus164]

Third on this one, once my tank became established they came on in!

 

[lildraken]

according to Melev this is called a Scypha Sponge.
http://www.melevsreef.com/id/scypha.html

 

[pedromatic]

I've had them from time to time. They come and go for reasons known only to them...harmless.

 

[Lifes A Beach]

I've had the same thing show up lately in two of my tanks. I use natural sea water. I wonder if they came in with it???

 

[JonnyVictory]

Only once I had these little guys in my tank. I think my fish ate them.

 

[creepin]

I have alot and big too, about 1/4 of an inch

 

[bishoptaner]

<a href=showthread.php?s=&postid=12281638#post12281638 target=_blank>Originally posted</a> by prideprops
I've had the same thing show up lately in two of my tanks. I use natural sea water. I wonder if they came in with it???

i think mine came in with the sand, i make my own saltwater.

thanks for the help guys.

 

[NanoKat]

Man, I was wondering if I should post about those buggers...they're all over my tank working their way out of my eco system. They seemed to appear after I set it up. Glad the mystery is solved!

 

[illal]

harmless, IMO not so attracive but like pedro said they come n go