What the heck is this????????????

I think the first 2 are pineapple spunge and the others are also spunges Forget the name but harmless pic are not that clear though.

Bill

[The Grizz]

Please pardon my ignorance but how can a sponge just appear out of the blue. I will get better pics and post tomorrow.

[Ryan]

There was probably spores or something on your live rock, the conditions got favourable to grow and you are just noticing it now. Thats the great thing about SW you never know what you got in there.

[hillegom]

I agree with sponges. They seem to grow from nowhere, out of direct light.
They are good, filtering bacteria and nutrients out of the water column.

[The Grizz]

Cool thanks I wont worry about it any more.