Why are my zoas spiky?

[Araona]

Hi, I have just been inspecting the tank after lights out and noticed that my scrambled egg zoa colony looks spiky. I'm sure it didn't look like this when we put them in, what could it be? (I know there's other little critters there but I'm looking at the spiky thing wrapped round the stalks)

 

[Tnops]

my zoas just do that at night, I wouldn't worry about it

 

[EeyoreIsMySpiritAnimal]

Hi, I have just been inspecting the tank after lights out and noticed that my scrambled egg zoa colony looks spiky. I'm sure it didn't look like this when we put them in, what could it be? (I know there's other little critters there but I'm looking at the spiky thing wrapped round the stalks)

The white stuff on the base of the coral is either a sponge or possibly bryozoans. Neither is a problem.