Must kill Zoanthids.....

[OrionN]

You can try to get your hand on a few Sundial snails and let them loose into your tank. These snails prey on Zoanthus and will slowly kill all your Zoas in your tank. for emergency, just kill them by hand. Becarefull handling these zoanthus because they can be very toxic to human and pets.

[klondike4001]

I'd take some of those blue ones if you get them off alive.....

[OrionN]

Frag the hard coral and sell the Zoanthus.

I used to have Zoas in my tank and it just absolutly overgrow all my hard coral and kill them.
I initially use a needle holder and just pull them one by one, then I got Sundial snails and dropped into the colony. I got a friend who own a LFS, and have him save Sundial snails for me when they come with his Zoas.
Keeping Zoanthus in SPS tank is asking for problem.

[JeremyGlen]

Well, I started out with one rock of these zoas and we all know what happened from there. I'm trying to get rid of all my zoas and mushrooms. They are getting annoying and stinging my hard corals.

I was looking into those sundial snails to take out the colonies. I hope I can find some. I think I'm going to be selling off some stuff here in the next few weeks to open my tank up and get more sps growing room.