White spike invading : what is this white spikey castle shooting out of rock? ?

[Rolltidekraz]

 

[GHOSTLY]

Is it bothering your coral or is it like a stick?

 

[Hydrahawk]

Hard or soft? I had some sponges that was sending out thin vertical protrusion.

 

[Rolltidekraz]

Is it bothering your coral or is it like a stick?

Like sticks

 

[Rolltidekraz]

Hard or soft? I had some sponges that was sending out thin vertical protrusion.

Not sure I haven’t touched them

 

[GHOSTLY]

Hmm I'm not sure, I do know that during my time of freshwater aquascapes this happened with mold on wood