Need help identifying these critters , lots in my sump, they seem stationary

[psycomnky]

 

[Tnops]

I think those are pineapple sponges, harmless filter feeders from what I've heard.

 

[Gtinnel]

I think those are pineapple sponges, harmless filter feeders from what I've heard.

What he said

 

[GHOSTLY]

Pineapple sponges! Leave them they're good for using silicate

 

[malacoda]

Good sign of a tank that is maturing and reaching a healthy balance.

 

[psycomnky]

If anyone is interested I gathered about 20 of these and dropped them in take to see if any of the fish would eat them… they all spit them out….. except my diamond goby…. He seems to love them. I looked closely to see if he saw scooping and sending them through gills and back into sand but I never noticed any in the sand he filtered… does anyone have in-site on this??

 

[Just John]

When silicate levels drop they will slowly die off. Silicates are usually from newer rock or sand. Sometimes tap water.

 

[GHOSTLY]

Agree with john

 

[psycomnky]

When silicate levels drop they will slowly die off. Silicates are usually from newer rock or sand. Sometimes tap water.

I started up my tank in June… caribsea live sand and new dry rock… I did purchase some cured plate rock and I’m making seascape by cutting and gluing dry rock. Now that i know what they are I suspect they will be with us for some time with addition of dry rock