• help to determine

  • Joseph6461

Hello everyone! The aquarium is over a year old, and I haven't added anything new for more than 6 months, and now I've discovered dense colonies of unknown organisms in the sump. I can't take a proper photo, so I tried to draw a schematic. It looks very much like an Artemia shrimp, translucent but harder and attached to the wall. It doesn't react to touch, and the size of the colony is about 100 individuals. The colony is chaotic. Thank you in advance to the experts.

Adam

This is a sponge, I don't remember the name, it lives in the presence of silicates, will go away over time, no harm.

Richard

Thank you.

Dawn6148

I found it, Sycon raphanus, I think this is yours)

Rebecca

exactly.... it! thanks again!