Nasoguy118
Reefing newb
These sponge looking things are growing like crazy in the intake part of my sump and on the underside of some of my rocks it seems to like shade. It has a hole that goes all the way to the bottom in the middle, it doesn't respond to touch I even took one out to put in a glass for some of these pics. The biggest of them is about 3/4" long and the smallest I can see are 1/8".
There's 3 pics of this stuff here.