spider web in tank....what caused this...?

[mechgobi]

Hi going to start cycling... And found this in my live rock...? ghost shrimp does it in freshwater..is it sort of marine shrimp?? Had freshwater dip and removed a crab..but this creature seem to be resistive..even couldn't remove bristle worm by freshwater dip..

[Clement Chen]

Does the tentacles move? Cause i might have the same thing

[mechgobi]

No tentacles, don't know which creature is causing this...rock was good today morning, n evening wen I was back from office say this spider web like layer on the rock...I don't think bristle worm is doing as this live rock was good with bristle for one week... adding sand yesterday is the addition..maybe something in sand did it...hope its not some pest...

[tofubox]

Hi bro, look up vermetid snails. Cheers. Mostly harmless but can multiple quickly. The "web" will irritate your corals if it touches them. The "web" is use to catch suspended particles in the water column.

[mechgobi]

Oh god, great started with nice irritating pest I guess... but what could this snails size.. Visually I don't see any big tube structure on the rock..

[tofubox]

looks like small tube worm