Green Star Polyps spreading without contact?

[Ryan]

I am not sure about the GSP but the Zoanthids pop up especially with frags. I find some of the polyps on my frag discs can come loose and start floating around the tank. Its never very many but somtimes I see new heads sprouting around. If they start in a spot I dont want them to I hit them with aptasia killer.

[mark]

Haven't noticed my GSP spreading without contact but sure wish I never
placed them on the rock work, very hard to contain.

Add to the list clove polyps spreading without touching.

[hillegom]

I have seen my GSP just growing into the water column. Later on it separated itself from the main colony. Luckily I noticed it and got rid of that piece before it established itself

[kien]

I have a GSP rock that grew/spread a little bubble like appendage into the water column and then popped off of the main colony and started rolling around the tank.

[bauder1986]

GSP mainly stays together. But if what the other folks say is true, then keep an eye out for that type of grow in your GSP. Oh yah, GSP will grow over substrate though. But that is easy enough to trim down. Just take a knife, cut the extra junk off, and pop it some where else for a few days to lower its stress levels and then take that piece to another tank or sell it or trade it.

[Danny]

As above, they can be a pain. I use boiling water through a feeding tube to keep them away from my suns and other corals. This works well. Knowing what I know now I would not have placed them in my tank. To answer your question, I have not seen them anywhere else in my tank .

[Dez]

Thanks for all the response, I will gather that it is fairly safe as long as my little rock is isolated and I keep watch.

Any others with the safely of zoo's on it's own little island rock on the substrate? Thanks again everyone.