Please ID.. Bad Bugs?....

[yznhmr]

I just got this coral, and it is in my observation tank, i noticed this weird stuff on the bottom .. I did see a bunch of CAP snails around.. could this be their eggs?

 

[menard]

Jason
That is CRYPTIC SPONGE aint a pest. Acts as a filter in your tank.
I have tons in my tank, all shades of colors.

 

[yznhmr]

ok thx.. looks cool i didnt want to kill it unless i had to..